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Finding the Fourth Proportional to 414.69, 572.19 and 240

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Solution

The fourth proportional to 414.69, 572.19 and 240 is: 331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.69 : 572.19 = 240 : x
  2. Step 2: Convert to fraction form
    414.69/572.19 = 240/x
  3. Step 3: Cross multiply
    414.69x = 572.19 × 240
  4. Step 4: Simplify right side
    414.69x = 137,325.60
  5. Step 5: Solve for x
    x = 137,325.60/414.69
  6. Step 6: Final answer
    x = 331.15

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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.