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Finding the Fourth Proportional to 100.67, 150.41 and 88.79

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Solution

The fourth proportional to 100.67, 150.41 and 88.79 is: 132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.67 : 150.41 = 88.79 : x
  2. Step 2: Convert to fraction form
    100.67/150.41 = 88.79/x
  3. Step 3: Cross multiply
    100.67x = 150.41 × 88.79
  4. Step 4: Simplify right side
    100.67x = 13,354.37
  5. Step 5: Solve for x
    x = 13,354.37/100.67
  6. Step 6: Final answer
    x = 132.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.