Home / 1,116.06-1,673.88-422.70

Finding the Fourth Proportional to 1,116.06, 1,673.88 and 422.70

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Solution

The fourth proportional to 1,116.06, 1,673.88 and 422.70 is: 633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.06 : 1,673.88 = 422.70 : x
  2. Step 2: Convert to fraction form
    1,116.06/1,673.88 = 422.70/x
  3. Step 3: Cross multiply
    1,116.06x = 1,673.88 × 422.70
  4. Step 4: Simplify right side
    1,116.06x = 707,549.08
  5. Step 5: Solve for x
    x = 707,549.08/1,116.06
  6. Step 6: Final answer
    x = 633.97

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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.