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Finding the Fourth Proportional to 439.54, 659.28 and 151.18

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Solution

The fourth proportional to 439.54, 659.28 and 151.18 is: 226.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.54 : 659.28 = 151.18 : x
  2. Step 2: Convert to fraction form
    439.54/659.28 = 151.18/x
  3. Step 3: Cross multiply
    439.54x = 659.28 × 151.18
  4. Step 4: Simplify right side
    439.54x = 99,669.95
  5. Step 5: Solve for x
    x = 99,669.95/439.54
  6. Step 6: Final answer
    x = 226.76

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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.