Home / 1,224.12-1,836.18-358.68

Finding the Fourth Proportional to 1,224.12, 1,836.18 and 358.68

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Solution

The fourth proportional to 1,224.12, 1,836.18 and 358.68 is: 538.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.12 : 1,836.18 = 358.68 : x
  2. Step 2: Convert to fraction form
    1,224.12/1,836.18 = 358.68/x
  3. Step 3: Cross multiply
    1,224.12x = 1,836.18 × 358.68
  4. Step 4: Simplify right side
    1,224.12x = 658,601.04
  5. Step 5: Solve for x
    x = 658,601.04/1,224.12
  6. Step 6: Final answer
    x = 538.02

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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.