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Finding the Fourth Proportional to 1,030.50, 1,546.20 and 510.12

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Solution

The fourth proportional to 1,030.50, 1,546.20 and 510.12 is: 765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.50 : 1,546.20 = 510.12 : x
  2. Step 2: Convert to fraction form
    1,030.50/1,546.20 = 510.12/x
  3. Step 3: Cross multiply
    1,030.50x = 1,546.20 × 510.12
  4. Step 4: Simplify right side
    1,030.50x = 788,747.54
  5. Step 5: Solve for x
    x = 788,747.54/1,030.50
  6. Step 6: Final answer
    x = 765.40

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.