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Finding the Fourth Proportional to 100.62, 151.57 and 94.55

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Solution

The fourth proportional to 100.62, 151.57 and 94.55 is: 142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.62 : 151.57 = 94.55 : x
  2. Step 2: Convert to fraction form
    100.62/151.57 = 94.55/x
  3. Step 3: Cross multiply
    100.62x = 151.57 × 94.55
  4. Step 4: Simplify right side
    100.62x = 14,329.71
  5. Step 5: Solve for x
    x = 14,329.71/100.62
  6. Step 6: Final answer
    x = 142.41

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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.