Home / 1,112.29-1,668.20-332.12

Finding the Fourth Proportional to 1,112.29, 1,668.20 and 332.12

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Solution

The fourth proportional to 1,112.29, 1,668.20 and 332.12 is: 498.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.29 : 1,668.20 = 332.12 : x
  2. Step 2: Convert to fraction form
    1,112.29/1,668.20 = 332.12/x
  3. Step 3: Cross multiply
    1,112.29x = 1,668.20 × 332.12
  4. Step 4: Simplify right side
    1,112.29x = 554,045.09
  5. Step 5: Solve for x
    x = 554,045.09/1,112.29
  6. Step 6: Final answer
    x = 498.11

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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.