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Finding the Fourth Proportional to 1,034.00, 1,549.17 and 686.51

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Solution

The fourth proportional to 1,034.00, 1,549.17 and 686.51 is: 1,028.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,034.00 : 1,549.17 = 686.51 : x
  2. Step 2: Convert to fraction form
    1,034.00/1,549.17 = 686.51/x
  3. Step 3: Cross multiply
    1,034.00x = 1,549.17 × 686.51
  4. Step 4: Simplify right side
    1,034.00x = 1,063,512.95
  5. Step 5: Solve for x
    x = 1,063,512.95/1,034.00
  6. Step 6: Final answer
    x = 1,028.55

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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.