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Finding the Fourth Proportional to 1,274.36, 1,758.70 and 743.44

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Solution

The fourth proportional to 1,274.36, 1,758.70 and 743.44 is: 1,026.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274.36 : 1,758.70 = 743.44 : x
  2. Step 2: Convert to fraction form
    1,274.36/1,758.70 = 743.44/x
  3. Step 3: Cross multiply
    1,274.36x = 1,758.70 × 743.44
  4. Step 4: Simplify right side
    1,274.36x = 1,307,487.93
  5. Step 5: Solve for x
    x = 1,307,487.93/1,274.36
  6. Step 6: Final answer
    x = 1,026.00

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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.