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Finding the Fourth Proportional to 1,248.29, 1,722.56 and 750.63

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Solution

The fourth proportional to 1,248.29, 1,722.56 and 750.63 is: 1,035.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.29 : 1,722.56 = 750.63 : x
  2. Step 2: Convert to fraction form
    1,248.29/1,722.56 = 750.63/x
  3. Step 3: Cross multiply
    1,248.29x = 1,722.56 × 750.63
  4. Step 4: Simplify right side
    1,248.29x = 1,293,001.46
  5. Step 5: Solve for x
    x = 1,293,001.46/1,248.29
  6. Step 6: Final answer
    x = 1,035.82

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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.