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Finding the Fourth Proportional to 337.68, 505.12 and 308.57

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Solution

The fourth proportional to 337.68, 505.12 and 308.57 is: 461.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.68 : 505.12 = 308.57 : x
  2. Step 2: Convert to fraction form
    337.68/505.12 = 308.57/x
  3. Step 3: Cross multiply
    337.68x = 505.12 × 308.57
  4. Step 4: Simplify right side
    337.68x = 155,865.06
  5. Step 5: Solve for x
    x = 155,865.06/337.68
  6. Step 6: Final answer
    x = 461.58

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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.