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Finding the Third Proportional to 59 and 91.38

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Solution

The third proportional to 59 and 91.38 is: 141.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    59 : 91.38 = 91.38 : x
  2. Step 2: Convert to fraction form
    59/91.38 = 91.38/x
  3. Step 3: Cross multiply
    59x = 91.38 × 91.38
  4. Step 4: Simplify right side
    59x = 8,349.39
  5. Step 5: Solve for x
    x = 8,349.39/59
  6. Step 6: Final answer
    x = 141.52

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.