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Finding the Fourth Proportional to 1,260.55, 1,739.46 and 736.48

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Solution

The fourth proportional to 1,260.55, 1,739.46 and 736.48 is: 1,016.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.55 : 1,739.46 = 736.48 : x
  2. Step 2: Convert to fraction form
    1,260.55/1,739.46 = 736.48/x
  3. Step 3: Cross multiply
    1,260.55x = 1,739.46 × 736.48
  4. Step 4: Simplify right side
    1,260.55x = 1,281,077.50
  5. Step 5: Solve for x
    x = 1,281,077.50/1,260.55
  6. Step 6: Final answer
    x = 1,016.28

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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.