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Finding the Fourth Proportional to 1,273.97, 1,758.06 and 714.58

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Solution

The fourth proportional to 1,273.97, 1,758.06 and 714.58 is: 986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.97 : 1,758.06 = 714.58 : x
  2. Step 2: Convert to fraction form
    1,273.97/1,758.06 = 714.58/x
  3. Step 3: Cross multiply
    1,273.97x = 1,758.06 × 714.58
  4. Step 4: Simplify right side
    1,273.97x = 1,256,270.12
  5. Step 5: Solve for x
    x = 1,256,270.12/1,273.97
  6. Step 6: Final answer
    x = 986.10

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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.