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Finding the Fourth Proportional to 655.32, 978.28 and 632.52

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Solution

The fourth proportional to 655.32, 978.28 and 632.52 is: 944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.32 : 978.28 = 632.52 : x
  2. Step 2: Convert to fraction form
    655.32/978.28 = 632.52/x
  3. Step 3: Cross multiply
    655.32x = 978.28 × 632.52
  4. Step 4: Simplify right side
    655.32x = 618,781.67
  5. Step 5: Solve for x
    x = 618,781.67/655.32
  6. Step 6: Final answer
    x = 944.24

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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.