Home / 1,491.28-2,236.29-668.95

Finding the Fourth Proportional to 1,491.28, 2,236.29 and 668.95

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Solution

The fourth proportional to 1,491.28, 2,236.29 and 668.95 is: 1,003.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.28 : 2,236.29 = 668.95 : x
  2. Step 2: Convert to fraction form
    1,491.28/2,236.29 = 668.95/x
  3. Step 3: Cross multiply
    1,491.28x = 2,236.29 × 668.95
  4. Step 4: Simplify right side
    1,491.28x = 1,495,966.20
  5. Step 5: Solve for x
    x = 1,495,966.20/1,491.28
  6. Step 6: Final answer
    x = 1,003.14

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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.