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Finding the Fourth Proportional to 74.39, 112.14 and 62.44

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Solution

The fourth proportional to 74.39, 112.14 and 62.44 is: 94.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.39 : 112.14 = 62.44 : x
  2. Step 2: Convert to fraction form
    74.39/112.14 = 62.44/x
  3. Step 3: Cross multiply
    74.39x = 112.14 × 62.44
  4. Step 4: Simplify right side
    74.39x = 7,001.74
  5. Step 5: Solve for x
    x = 7,001.74/74.39
  6. Step 6: Final answer
    x = 94.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.