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Finding the Fourth Proportional to 151.04, 226.62 and 86.13

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Solution

The fourth proportional to 151.04, 226.62 and 86.13 is: 129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.04 : 226.62 = 86.13 : x
  2. Step 2: Convert to fraction form
    151.04/226.62 = 86.13/x
  3. Step 3: Cross multiply
    151.04x = 226.62 × 86.13
  4. Step 4: Simplify right side
    151.04x = 19,518.78
  5. Step 5: Solve for x
    x = 19,518.78/151.04
  6. Step 6: Final answer
    x = 129.23

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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.