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Finding the Fourth Proportional to 439.76, 659.36 and 151.14

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Solution

The fourth proportional to 439.76, 659.36 and 151.14 is: 226.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.76 : 659.36 = 151.14 : x
  2. Step 2: Convert to fraction form
    439.76/659.36 = 151.14/x
  3. Step 3: Cross multiply
    439.76x = 659.36 × 151.14
  4. Step 4: Simplify right side
    439.76x = 99,655.67
  5. Step 5: Solve for x
    x = 99,655.67/439.76
  6. Step 6: Final answer
    x = 226.61

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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.