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Finding the Fourth Proportional to 355.80, 489.87 and 337.59

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Solution

The fourth proportional to 355.80, 489.87 and 337.59 is: 464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.80 : 489.87 = 337.59 : x
  2. Step 2: Convert to fraction form
    355.80/489.87 = 337.59/x
  3. Step 3: Cross multiply
    355.80x = 489.87 × 337.59
  4. Step 4: Simplify right side
    355.80x = 165,375.21
  5. Step 5: Solve for x
    x = 165,375.21/355.80
  6. Step 6: Final answer
    x = 464.80

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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.