Home / 1,014.20-1,521.45-320.93

Finding the Fourth Proportional to 1,014.20, 1,521.45 and 320.93

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Solution

The fourth proportional to 1,014.20, 1,521.45 and 320.93 is: 481.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.20 : 1,521.45 = 320.93 : x
  2. Step 2: Convert to fraction form
    1,014.20/1,521.45 = 320.93/x
  3. Step 3: Cross multiply
    1,014.20x = 1,521.45 × 320.93
  4. Step 4: Simplify right side
    1,014.20x = 488,278.95
  5. Step 5: Solve for x
    x = 488,278.95/1,014.20
  6. Step 6: Final answer
    x = 481.44

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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.