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Finding the Fourth Proportional to 834.26, 1,151.35 and 484.88

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Solution

The fourth proportional to 834.26, 1,151.35 and 484.88 is: 669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.26 : 1,151.35 = 484.88 : x
  2. Step 2: Convert to fraction form
    834.26/1,151.35 = 484.88/x
  3. Step 3: Cross multiply
    834.26x = 1,151.35 × 484.88
  4. Step 4: Simplify right side
    834.26x = 558,259.62
  5. Step 5: Solve for x
    x = 558,259.62/834.26
  6. Step 6: Final answer
    x = 669.17

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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.