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Finding the Fourth Proportional to 424.16, 585.31 and 247.09

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Solution

The fourth proportional to 424.16, 585.31 and 247.09 is: 340.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.16 : 585.31 = 247.09 : x
  2. Step 2: Convert to fraction form
    424.16/585.31 = 247.09/x
  3. Step 3: Cross multiply
    424.16x = 585.31 × 247.09
  4. Step 4: Simplify right side
    424.16x = 144,624.24
  5. Step 5: Solve for x
    x = 144,624.24/424.16
  6. Step 6: Final answer
    x = 340.97

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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.