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Finding the Fourth Proportional to 100.24, 151.20 and 88.97

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Solution

The fourth proportional to 100.24, 151.20 and 88.97 is: 134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.24 : 151.20 = 88.97 : x
  2. Step 2: Convert to fraction form
    100.24/151.20 = 88.97/x
  3. Step 3: Cross multiply
    100.24x = 151.20 × 88.97
  4. Step 4: Simplify right side
    100.24x = 13,451.51
  5. Step 5: Solve for x
    x = 13,451.51/100.24
  6. Step 6: Final answer
    x = 134.20

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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.