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Finding the Fourth Proportional to 1,302.97, 1,798.14 and 713.55

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Solution

The fourth proportional to 1,302.97, 1,798.14 and 713.55 is: 984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.97 : 1,798.14 = 713.55 : x
  2. Step 2: Convert to fraction form
    1,302.97/1,798.14 = 713.55/x
  3. Step 3: Cross multiply
    1,302.97x = 1,798.14 × 713.55
  4. Step 4: Simplify right side
    1,302.97x = 1,283,062.80
  5. Step 5: Solve for x
    x = 1,283,062.80/1,302.97
  6. Step 6: Final answer
    x = 984.72

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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.