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Finding the Fourth Proportional to 834.80, 1,151.63 and 540.16

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Solution

The fourth proportional to 834.80, 1,151.63 and 540.16 is: 745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.80 : 1,151.63 = 540.16 : x
  2. Step 2: Convert to fraction form
    834.80/1,151.63 = 540.16/x
  3. Step 3: Cross multiply
    834.80x = 1,151.63 × 540.16
  4. Step 4: Simplify right side
    834.80x = 622,062.93
  5. Step 5: Solve for x
    x = 622,062.93/834.80
  6. Step 6: Final answer
    x = 745.17

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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.