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Finding the Fourth Proportional to 463.04, 638.77 and 285.85

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Solution

The fourth proportional to 463.04, 638.77 and 285.85 is: 394.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.04 : 638.77 = 285.85 : x
  2. Step 2: Convert to fraction form
    463.04/638.77 = 285.85/x
  3. Step 3: Cross multiply
    463.04x = 638.77 × 285.85
  4. Step 4: Simplify right side
    463.04x = 182,590.81
  5. Step 5: Solve for x
    x = 182,590.81/463.04
  6. Step 6: Final answer
    x = 394.33

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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.