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Finding the Fourth Proportional to 691.71, 954.76 and 552.79

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Solution

The fourth proportional to 691.71, 954.76 and 552.79 is: 763.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.71 : 954.76 = 552.79 : x
  2. Step 2: Convert to fraction form
    691.71/954.76 = 552.79/x
  3. Step 3: Cross multiply
    691.71x = 954.76 × 552.79
  4. Step 4: Simplify right side
    691.71x = 527,781.78
  5. Step 5: Solve for x
    x = 527,781.78/691.71
  6. Step 6: Final answer
    x = 763.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.