Home / 1,021.45-1,532.18-251.95

Finding the Fourth Proportional to 1,021.45, 1,532.18 and 251.95

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Solution

The fourth proportional to 1,021.45, 1,532.18 and 251.95 is: 377.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.45 : 1,532.18 = 251.95 : x
  2. Step 2: Convert to fraction form
    1,021.45/1,532.18 = 251.95/x
  3. Step 3: Cross multiply
    1,021.45x = 1,532.18 × 251.95
  4. Step 4: Simplify right side
    1,021.45x = 386,023.83
  5. Step 5: Solve for x
    x = 386,023.83/1,021.45
  6. Step 6: Final answer
    x = 377.92

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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.