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Finding the Fourth Proportional to 833.68, 1,250.52 and 320.32

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Solution

The fourth proportional to 833.68, 1,250.52 and 320.32 is: 480.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.68 : 1,250.52 = 320.32 : x
  2. Step 2: Convert to fraction form
    833.68/1,250.52 = 320.32/x
  3. Step 3: Cross multiply
    833.68x = 1,250.52 × 320.32
  4. Step 4: Simplify right side
    833.68x = 400,566.57
  5. Step 5: Solve for x
    x = 400,566.57/833.68
  6. Step 6: Final answer
    x = 480.48

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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.