Home / 1,147.17-1,719.78-454.33

Finding the Fourth Proportional to 1,147.17, 1,719.78 and 454.33

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Solution

The fourth proportional to 1,147.17, 1,719.78 and 454.33 is: 681.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.17 : 1,719.78 = 454.33 : x
  2. Step 2: Convert to fraction form
    1,147.17/1,719.78 = 454.33/x
  3. Step 3: Cross multiply
    1,147.17x = 1,719.78 × 454.33
  4. Step 4: Simplify right side
    1,147.17x = 781,347.09
  5. Step 5: Solve for x
    x = 781,347.09/1,147.17
  6. Step 6: Final answer
    x = 681.11

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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.