Home / 1,113.10-1,668.30-496.15

Finding the Fourth Proportional to 1,113.10, 1,668.30 and 496.15

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Solution

The fourth proportional to 1,113.10, 1,668.30 and 496.15 is: 743.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.10 : 1,668.30 = 496.15 : x
  2. Step 2: Convert to fraction form
    1,113.10/1,668.30 = 496.15/x
  3. Step 3: Cross multiply
    1,113.10x = 1,668.30 × 496.15
  4. Step 4: Simplify right side
    1,113.10x = 827,727.05
  5. Step 5: Solve for x
    x = 827,727.05/1,113.10
  6. Step 6: Final answer
    x = 743.62

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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.