Home / 1,112.16-1,668.24-462.90

Finding the Fourth Proportional to 1,112.16, 1,668.24 and 462.90

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Solution

The fourth proportional to 1,112.16, 1,668.24 and 462.90 is: 694.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.16 : 1,668.24 = 462.90 : x
  2. Step 2: Convert to fraction form
    1,112.16/1,668.24 = 462.90/x
  3. Step 3: Cross multiply
    1,112.16x = 1,668.24 × 462.90
  4. Step 4: Simplify right side
    1,112.16x = 772,228.30
  5. Step 5: Solve for x
    x = 772,228.30/1,112.16
  6. Step 6: Final answer
    x = 694.35

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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.