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Finding the Fourth Proportional to 337.30, 505.67 and 215.53

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Solution

The fourth proportional to 337.30, 505.67 and 215.53 is: 323.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.30 : 505.67 = 215.53 : x
  2. Step 2: Convert to fraction form
    337.30/505.67 = 215.53/x
  3. Step 3: Cross multiply
    337.30x = 505.67 × 215.53
  4. Step 4: Simplify right side
    337.30x = 108,985.07
  5. Step 5: Solve for x
    x = 108,985.07/337.30
  6. Step 6: Final answer
    x = 323.11

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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.