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Finding the Fourth Proportional to 91.29, 136.83 and 37.13

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Solution

The fourth proportional to 91.29, 136.83 and 37.13 is: 55.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.29 : 136.83 = 37.13 : x
  2. Step 2: Convert to fraction form
    91.29/136.83 = 37.13/x
  3. Step 3: Cross multiply
    91.29x = 136.83 × 37.13
  4. Step 4: Simplify right side
    91.29x = 5,079.95
  5. Step 5: Solve for x
    x = 5,079.95/91.29
  6. Step 6: Final answer
    x = 55.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.