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Finding the Fourth Proportional to 416.64, 624.00 and 254.04

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Solution

The fourth proportional to 416.64, 624.00 and 254.04 is: 380.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.64 : 624.00 = 254.04 : x
  2. Step 2: Convert to fraction form
    416.64/624.00 = 254.04/x
  3. Step 3: Cross multiply
    416.64x = 624.00 × 254.04
  4. Step 4: Simplify right side
    416.64x = 158,519.57
  5. Step 5: Solve for x
    x = 158,519.57/416.64
  6. Step 6: Final answer
    x = 380.47

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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.