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Finding the Fourth Proportional to 1,358.33, 2,032.87 and 838.66

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Solution

The fourth proportional to 1,358.33, 2,032.87 and 838.66 is: 1,255.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.33 : 2,032.87 = 838.66 : x
  2. Step 2: Convert to fraction form
    1,358.33/2,032.87 = 838.66/x
  3. Step 3: Cross multiply
    1,358.33x = 2,032.87 × 838.66
  4. Step 4: Simplify right side
    1,358.33x = 1,704,876.59
  5. Step 5: Solve for x
    x = 1,704,876.59/1,358.33
  6. Step 6: Final answer
    x = 1,255.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.