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Finding the Fourth Proportional to 691.04, 953.88 and 458.24

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Solution

The fourth proportional to 691.04, 953.88 and 458.24 is: 632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.04 : 953.88 = 458.24 : x
  2. Step 2: Convert to fraction form
    691.04/953.88 = 458.24/x
  3. Step 3: Cross multiply
    691.04x = 953.88 × 458.24
  4. Step 4: Simplify right side
    691.04x = 437,105.97
  5. Step 5: Solve for x
    x = 437,105.97/691.04
  6. Step 6: Final answer
    x = 632.53

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1.5x scale

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.