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Finding the Fourth Proportional to 655.52, 987.02 and 575.36

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Solution

The fourth proportional to 655.52, 987.02 and 575.36 is: 866.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.52 : 987.02 = 575.36 : x
  2. Step 2: Convert to fraction form
    655.52/987.02 = 575.36/x
  3. Step 3: Cross multiply
    655.52x = 987.02 × 575.36
  4. Step 4: Simplify right side
    655.52x = 567,891.83
  5. Step 5: Solve for x
    x = 567,891.83/655.52
  6. Step 6: Final answer
    x = 866.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.