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Finding the Fourth Proportional to 403.48, 558.12 and 337.78

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Solution

The fourth proportional to 403.48, 558.12 and 337.78 is: 467.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.48 : 558.12 = 337.78 : x
  2. Step 2: Convert to fraction form
    403.48/558.12 = 337.78/x
  3. Step 3: Cross multiply
    403.48x = 558.12 × 337.78
  4. Step 4: Simplify right side
    403.48x = 188,521.77
  5. Step 5: Solve for x
    x = 188,521.77/403.48
  6. Step 6: Final answer
    x = 467.24

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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.