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Finding the Fourth Proportional to 83.59, 115.32 and 62.64

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Solution

The fourth proportional to 83.59, 115.32 and 62.64 is: 86.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83.59 : 115.32 = 62.64 : x
  2. Step 2: Convert to fraction form
    83.59/115.32 = 62.64/x
  3. Step 3: Cross multiply
    83.59x = 115.32 × 62.64
  4. Step 4: Simplify right side
    83.59x = 7,223.64
  5. Step 5: Solve for x
    x = 7,223.64/83.59
  6. Step 6: Final answer
    x = 86.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.