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Finding the Fourth Proportional to 655.28, 979.24 and 532.16

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Solution

The fourth proportional to 655.28, 979.24 and 532.16 is: 795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.28 : 979.24 = 532.16 : x
  2. Step 2: Convert to fraction form
    655.28/979.24 = 532.16/x
  3. Step 3: Cross multiply
    655.28x = 979.24 × 532.16
  4. Step 4: Simplify right side
    655.28x = 521,112.36
  5. Step 5: Solve for x
    x = 521,112.36/655.28
  6. Step 6: Final answer
    x = 795.25

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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.