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Finding the Fourth Proportional to 691.59, 954.01 and 525.54

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Solution

The fourth proportional to 691.59, 954.01 and 525.54 is: 724.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.59 : 954.01 = 525.54 : x
  2. Step 2: Convert to fraction form
    691.59/954.01 = 525.54/x
  3. Step 3: Cross multiply
    691.59x = 954.01 × 525.54
  4. Step 4: Simplify right side
    691.59x = 501,370.42
  5. Step 5: Solve for x
    x = 501,370.42/691.59
  6. Step 6: Final answer
    x = 724.95

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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.