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Finding the Fourth Proportional to 337.47, 505.58 and 215.48

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Solution

The fourth proportional to 337.47, 505.58 and 215.48 is: 322.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.47 : 505.58 = 215.48 : x
  2. Step 2: Convert to fraction form
    337.47/505.58 = 215.48/x
  3. Step 3: Cross multiply
    337.47x = 505.58 × 215.48
  4. Step 4: Simplify right side
    337.47x = 108,942.38
  5. Step 5: Solve for x
    x = 108,942.38/337.47
  6. Step 6: Final answer
    x = 322.82

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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.