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Finding the Fourth Proportional to 337.55, 505.85 and 315.36

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Solution

The fourth proportional to 337.55, 505.85 and 315.36 is: 472.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.55 : 505.85 = 315.36 : x
  2. Step 2: Convert to fraction form
    337.55/505.85 = 315.36/x
  3. Step 3: Cross multiply
    337.55x = 505.85 × 315.36
  4. Step 4: Simplify right side
    337.55x = 159,523.28
  5. Step 5: Solve for x
    x = 159,523.28/337.55
  6. Step 6: Final answer
    x = 472.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.