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Finding the Fourth Proportional to 416.04, 624.15 and 142.13

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Solution

The fourth proportional to 416.04, 624.15 and 142.13 is: 213.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.04 : 624.15 = 142.13 : x
  2. Step 2: Convert to fraction form
    416.04/624.15 = 142.13/x
  3. Step 3: Cross multiply
    416.04x = 624.15 × 142.13
  4. Step 4: Simplify right side
    416.04x = 88,707.32
  5. Step 5: Solve for x
    x = 88,707.32/416.04
  6. Step 6: Final answer
    x = 213.22

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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.