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Finding the Fourth Proportional to 937.90, 1,293.84 and 606.61

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Solution

The fourth proportional to 937.90, 1,293.84 and 606.61 is: 836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.90 : 1,293.84 = 606.61 : x
  2. Step 2: Convert to fraction form
    937.90/1,293.84 = 606.61/x
  3. Step 3: Cross multiply
    937.90x = 1,293.84 × 606.61
  4. Step 4: Simplify right side
    937.90x = 784,846.78
  5. Step 5: Solve for x
    x = 784,846.78/937.90
  6. Step 6: Final answer
    x = 836.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.