Home / 1,546.80-2,320.20-392.55

Finding the Fourth Proportional to 1,546.80, 2,320.20 and 392.55

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Solution

The fourth proportional to 1,546.80, 2,320.20 and 392.55 is: 588.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.80 : 2,320.20 = 392.55 : x
  2. Step 2: Convert to fraction form
    1,546.80/2,320.20 = 392.55/x
  3. Step 3: Cross multiply
    1,546.80x = 2,320.20 × 392.55
  4. Step 4: Simplify right side
    1,546.80x = 910,794.51
  5. Step 5: Solve for x
    x = 910,794.51/1,546.80
  6. Step 6: Final answer
    x = 588.83

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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.