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Finding the Fourth Proportional to 1,263.71, 1,743.77 and 732.51

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Solution

The fourth proportional to 1,263.71, 1,743.77 and 732.51 is: 1,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.71 : 1,743.77 = 732.51 : x
  2. Step 2: Convert to fraction form
    1,263.71/1,743.77 = 732.51/x
  3. Step 3: Cross multiply
    1,263.71x = 1,743.77 × 732.51
  4. Step 4: Simplify right side
    1,263.71x = 1,277,328.96
  5. Step 5: Solve for x
    x = 1,277,328.96/1,263.71
  6. Step 6: Final answer
    x = 1,010.78

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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.