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Finding the Fourth Proportional to 337.75, 505.42 and 207.78

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Solution

The fourth proportional to 337.75, 505.42 and 207.78 is: 310.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.75 : 505.42 = 207.78 : x
  2. Step 2: Convert to fraction form
    337.75/505.42 = 207.78/x
  3. Step 3: Cross multiply
    337.75x = 505.42 × 207.78
  4. Step 4: Simplify right side
    337.75x = 105,017.76
  5. Step 5: Solve for x
    x = 105,017.76/337.75
  6. Step 6: Final answer
    x = 310.93

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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.