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Finding the Fourth Proportional to 1,743.76, 2,617.08 and 718.48

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Solution

The fourth proportional to 1,743.76, 2,617.08 and 718.48 is: 1,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.76 : 2,617.08 = 718.48 : x
  2. Step 2: Convert to fraction form
    1,743.76/2,617.08 = 718.48/x
  3. Step 3: Cross multiply
    1,743.76x = 2,617.08 × 718.48
  4. Step 4: Simplify right side
    1,743.76x = 1,880,319.64
  5. Step 5: Solve for x
    x = 1,880,319.64/1,743.76
  6. Step 6: Final answer
    x = 1,078.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.