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Finding the Fourth Proportional to 834.11, 1,151.15 and 484.91

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Solution

The fourth proportional to 834.11, 1,151.15 and 484.91 is: 669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.11 : 1,151.15 = 484.91 : x
  2. Step 2: Convert to fraction form
    834.11/1,151.15 = 484.91/x
  3. Step 3: Cross multiply
    834.11x = 1,151.15 × 484.91
  4. Step 4: Simplify right side
    834.11x = 558,201.72
  5. Step 5: Solve for x
    x = 558,201.72/834.11
  6. Step 6: Final answer
    x = 669.22

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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.