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Finding the Fourth Proportional to 837.91, 1,156.22 and 464.78

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Solution

The fourth proportional to 837.91, 1,156.22 and 464.78 is: 641.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.91 : 1,156.22 = 464.78 : x
  2. Step 2: Convert to fraction form
    837.91/1,156.22 = 464.78/x
  3. Step 3: Cross multiply
    837.91x = 1,156.22 × 464.78
  4. Step 4: Simplify right side
    837.91x = 537,385.61
  5. Step 5: Solve for x
    x = 537,385.61/837.91
  6. Step 6: Final answer
    x = 641.34

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1.5x scale

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.