Home / 1,223.27-1,834.96-390.42

Finding the Fourth Proportional to 1,223.27, 1,834.96 and 390.42

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Solution

The fourth proportional to 1,223.27, 1,834.96 and 390.42 is: 585.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.27 : 1,834.96 = 390.42 : x
  2. Step 2: Convert to fraction form
    1,223.27/1,834.96 = 390.42/x
  3. Step 3: Cross multiply
    1,223.27x = 1,834.96 × 390.42
  4. Step 4: Simplify right side
    1,223.27x = 716,405.08
  5. Step 5: Solve for x
    x = 716,405.08/1,223.27
  6. Step 6: Final answer
    x = 585.65

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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.