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Finding the Fourth Proportional to 1,115.27, 1,672.89 and 335.34

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Solution

The fourth proportional to 1,115.27, 1,672.89 and 335.34 is: 503.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.27 : 1,672.89 = 335.34 : x
  2. Step 2: Convert to fraction form
    1,115.27/1,672.89 = 335.34/x
  3. Step 3: Cross multiply
    1,115.27x = 1,672.89 × 335.34
  4. Step 4: Simplify right side
    1,115.27x = 560,986.93
  5. Step 5: Solve for x
    x = 560,986.93/1,115.27
  6. Step 6: Final answer
    x = 503.01

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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.