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Finding the Fourth Proportional to 92.65, 127.76 and 83.53

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Solution

The fourth proportional to 92.65, 127.76 and 83.53 is: 115.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92.65 : 127.76 = 83.53 : x
  2. Step 2: Convert to fraction form
    92.65/127.76 = 83.53/x
  3. Step 3: Cross multiply
    92.65x = 127.76 × 83.53
  4. Step 4: Simplify right side
    92.65x = 10,671.79
  5. Step 5: Solve for x
    x = 10,671.79/92.65
  6. Step 6: Final answer
    x = 115.19

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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.