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Finding the Fourth Proportional to 837.91, 1,254.21 and 471.61

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Solution

The fourth proportional to 837.91, 1,254.21 and 471.61 is: 705.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.91 : 1,254.21 = 471.61 : x
  2. Step 2: Convert to fraction form
    837.91/1,254.21 = 471.61/x
  3. Step 3: Cross multiply
    837.91x = 1,254.21 × 471.61
  4. Step 4: Simplify right side
    837.91x = 591,497.98
  5. Step 5: Solve for x
    x = 591,497.98/837.91
  6. Step 6: Final answer
    x = 705.92

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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.