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Finding the Fourth Proportional to 91.51, 126.29 and 62.41

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Solution

The fourth proportional to 91.51, 126.29 and 62.41 is: 86.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91.51 : 126.29 = 62.41 : x
  2. Step 2: Convert to fraction form
    91.51/126.29 = 62.41/x
  3. Step 3: Cross multiply
    91.51x = 126.29 × 62.41
  4. Step 4: Simplify right side
    91.51x = 7,881.76
  5. Step 5: Solve for x
    x = 7,881.76/91.51
  6. Step 6: Final answer
    x = 86.13

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Why These Related Problems?

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