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Finding the Fourth Proportional to 424.08, 584.62 and 276.68

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Solution

The fourth proportional to 424.08, 584.62 and 276.68 is: 381.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.08 : 584.62 = 276.68 : x
  2. Step 2: Convert to fraction form
    424.08/584.62 = 276.68/x
  3. Step 3: Cross multiply
    424.08x = 584.62 × 276.68
  4. Step 4: Simplify right side
    424.08x = 161,752.66
  5. Step 5: Solve for x
    x = 161,752.66/424.08
  6. Step 6: Final answer
    x = 381.42

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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.