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Finding the Fourth Proportional to 511.35, 767.03 and 430.35

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Solution

The fourth proportional to 511.35, 767.03 and 430.35 is: 645.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.35 : 767.03 = 430.35 : x
  2. Step 2: Convert to fraction form
    511.35/767.03 = 430.35/x
  3. Step 3: Cross multiply
    511.35x = 767.03 × 430.35
  4. Step 4: Simplify right side
    511.35x = 330,089.21
  5. Step 5: Solve for x
    x = 330,089.21/511.35
  6. Step 6: Final answer
    x = 645.53

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.