Home / 1,432.11-2,148.18-392.20

Finding the Fourth Proportional to 1,432.11, 2,148.18 and 392.20

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Solution

The fourth proportional to 1,432.11, 2,148.18 and 392.20 is: 588.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.11 : 2,148.18 = 392.20 : x
  2. Step 2: Convert to fraction form
    1,432.11/2,148.18 = 392.20/x
  3. Step 3: Cross multiply
    1,432.11x = 2,148.18 × 392.20
  4. Step 4: Simplify right side
    1,432.11x = 842,510.83
  5. Step 5: Solve for x
    x = 842,510.83/1,432.11
  6. Step 6: Final answer
    x = 588.30

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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.