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Finding the Fourth Proportional to 416.87, 625.35 and 153.30

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Solution

The fourth proportional to 416.87, 625.35 and 153.30 is: 229.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.87 : 625.35 = 153.30 : x
  2. Step 2: Convert to fraction form
    416.87/625.35 = 153.30/x
  3. Step 3: Cross multiply
    416.87x = 625.35 × 153.30
  4. Step 4: Simplify right side
    416.87x = 95,869.07
  5. Step 5: Solve for x
    x = 95,869.07/416.87
  6. Step 6: Final answer
    x = 229.97

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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.