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Finding the Fourth Proportional to 337.66, 505.87 and 215.69

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Solution

The fourth proportional to 337.66, 505.87 and 215.69 is: 323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.66 : 505.87 = 215.69 : x
  2. Step 2: Convert to fraction form
    337.66/505.87 = 215.69/x
  3. Step 3: Cross multiply
    337.66x = 505.87 × 215.69
  4. Step 4: Simplify right side
    337.66x = 109,108.03
  5. Step 5: Solve for x
    x = 109,108.03/337.66
  6. Step 6: Final answer
    x = 323.13

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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.