Home / 1,116.92-1,675.42-423.36

Finding the Fourth Proportional to 1,116.92, 1,675.42 and 423.36

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Solution

The fourth proportional to 1,116.92, 1,675.42 and 423.36 is: 635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.92 : 1,675.42 = 423.36 : x
  2. Step 2: Convert to fraction form
    1,116.92/1,675.42 = 423.36/x
  3. Step 3: Cross multiply
    1,116.92x = 1,675.42 × 423.36
  4. Step 4: Simplify right side
    1,116.92x = 709,304.75
  5. Step 5: Solve for x
    x = 709,304.75/1,116.92
  6. Step 6: Final answer
    x = 635.05

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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.