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Finding the Fourth Proportional to 91.65, 126.49 and 60.57

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Solution

The fourth proportional to 91.65, 126.49 and 60.57 is: 83.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.65 : 126.49 = 60.57 : x
  2. Step 2: Convert to fraction form
    91.65/126.49 = 60.57/x
  3. Step 3: Cross multiply
    91.65x = 126.49 × 60.57
  4. Step 4: Simplify right side
    91.65x = 7,661.23
  5. Step 5: Solve for x
    x = 7,661.23/91.65
  6. Step 6: Final answer
    x = 83.59

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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.