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Finding the Fourth Proportional to 554.28, 828.40 and 510.49

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Solution

The fourth proportional to 554.28, 828.40 and 510.49 is: 762.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.28 : 828.40 = 510.49 : x
  2. Step 2: Convert to fraction form
    554.28/828.40 = 510.49/x
  3. Step 3: Cross multiply
    554.28x = 828.40 × 510.49
  4. Step 4: Simplify right side
    554.28x = 422,889.92
  5. Step 5: Solve for x
    x = 422,889.92/554.28
  6. Step 6: Final answer
    x = 762.95

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.