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Finding the Fourth Proportional to 937.27, 1,405.81 and 243.91

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Solution

The fourth proportional to 937.27, 1,405.81 and 243.91 is: 365.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.27 : 1,405.81 = 243.91 : x
  2. Step 2: Convert to fraction form
    937.27/1,405.81 = 243.91/x
  3. Step 3: Cross multiply
    937.27x = 1,405.81 × 243.91
  4. Step 4: Simplify right side
    937.27x = 342,891.12
  5. Step 5: Solve for x
    x = 342,891.12/937.27
  6. Step 6: Final answer
    x = 365.84

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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.