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Finding the Fourth Proportional to 100.90, 151.53 and 88.30

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Solution

The fourth proportional to 100.90, 151.53 and 88.30 is: 132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.90 : 151.53 = 88.30 : x
  2. Step 2: Convert to fraction form
    100.90/151.53 = 88.30/x
  3. Step 3: Cross multiply
    100.90x = 151.53 × 88.30
  4. Step 4: Simplify right side
    100.90x = 13,380.10
  5. Step 5: Solve for x
    x = 13,380.10/100.90
  6. Step 6: Final answer
    x = 132.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.