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Finding the Fourth Proportional to 414.13, 571.47 and 248.31

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Solution

The fourth proportional to 414.13, 571.47 and 248.31 is: 342.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.13 : 571.47 = 248.31 : x
  2. Step 2: Convert to fraction form
    414.13/571.47 = 248.31/x
  3. Step 3: Cross multiply
    414.13x = 571.47 × 248.31
  4. Step 4: Simplify right side
    414.13x = 141,901.72
  5. Step 5: Solve for x
    x = 141,901.72/414.13
  6. Step 6: Final answer
    x = 342.65

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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.