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Finding the Fourth Proportional to 1,332.55, 1,838.31 and 834.94

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Solution

The fourth proportional to 1,332.55, 1,838.31 and 834.94 is: 1,151.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.55 : 1,838.31 = 834.94 : x
  2. Step 2: Convert to fraction form
    1,332.55/1,838.31 = 834.94/x
  3. Step 3: Cross multiply
    1,332.55x = 1,838.31 × 834.94
  4. Step 4: Simplify right side
    1,332.55x = 1,534,869.36
  5. Step 5: Solve for x
    x = 1,534,869.36/1,332.55
  6. Step 6: Final answer
    x = 1,151.83

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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.