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Finding the Fourth Proportional to 458.14, 632.15 and 261.61

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Solution

The fourth proportional to 458.14, 632.15 and 261.61 is: 360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.14 : 632.15 = 261.61 : x
  2. Step 2: Convert to fraction form
    458.14/632.15 = 261.61/x
  3. Step 3: Cross multiply
    458.14x = 632.15 × 261.61
  4. Step 4: Simplify right side
    458.14x = 165,375.45
  5. Step 5: Solve for x
    x = 165,375.45/458.14
  6. Step 6: Final answer
    x = 360.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.