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Finding the Fourth Proportional to 1,261.09, 1,740.03 and 736.88

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Solution

The fourth proportional to 1,261.09, 1,740.03 and 736.88 is: 1,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.09 : 1,740.03 = 736.88 : x
  2. Step 2: Convert to fraction form
    1,261.09/1,740.03 = 736.88/x
  3. Step 3: Cross multiply
    1,261.09x = 1,740.03 × 736.88
  4. Step 4: Simplify right side
    1,261.09x = 1,282,193.31
  5. Step 5: Solve for x
    x = 1,282,193.31/1,261.09
  6. Step 6: Final answer
    x = 1,016.73

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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.