Home / 1,131.20-1,696.68-482.08

Finding the Fourth Proportional to 1,131.20, 1,696.68 and 482.08

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Solution

The fourth proportional to 1,131.20, 1,696.68 and 482.08 is: 723.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.20 : 1,696.68 = 482.08 : x
  2. Step 2: Convert to fraction form
    1,131.20/1,696.68 = 482.08/x
  3. Step 3: Cross multiply
    1,131.20x = 1,696.68 × 482.08
  4. Step 4: Simplify right side
    1,131.20x = 817,935.49
  5. Step 5: Solve for x
    x = 817,935.49/1,131.20
  6. Step 6: Final answer
    x = 723.07

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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.