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Finding the Fourth Proportional to 1,273.94, 1,757.82 and 714.32

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Solution

The fourth proportional to 1,273.94, 1,757.82 and 714.32 is: 985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.94 : 1,757.82 = 714.32 : x
  2. Step 2: Convert to fraction form
    1,273.94/1,757.82 = 714.32/x
  3. Step 3: Cross multiply
    1,273.94x = 1,757.82 × 714.32
  4. Step 4: Simplify right side
    1,273.94x = 1,255,645.98
  5. Step 5: Solve for x
    x = 1,255,645.98/1,273.94
  6. Step 6: Final answer
    x = 985.64

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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.