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Finding the Fourth Proportional to 458.95, 688.31 and 150.79

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Solution

The fourth proportional to 458.95, 688.31 and 150.79 is: 226.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.95 : 688.31 = 150.79 : x
  2. Step 2: Convert to fraction form
    458.95/688.31 = 150.79/x
  3. Step 3: Cross multiply
    458.95x = 688.31 × 150.79
  4. Step 4: Simplify right side
    458.95x = 103,787.79
  5. Step 5: Solve for x
    x = 103,787.79/458.95
  6. Step 6: Final answer
    x = 226.14

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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.