Home / 1,015.20-1,524.16-982.40

Finding the Fourth Proportional to 1,015.20, 1,524.16 and 982.40

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Solution

The fourth proportional to 1,015.20, 1,524.16 and 982.40 is: 1,474.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.20 : 1,524.16 = 982.40 : x
  2. Step 2: Convert to fraction form
    1,015.20/1,524.16 = 982.40/x
  3. Step 3: Cross multiply
    1,015.20x = 1,524.16 × 982.40
  4. Step 4: Simplify right side
    1,015.20x = 1,497,334.78
  5. Step 5: Solve for x
    x = 1,497,334.78/1,015.20
  6. Step 6: Final answer
    x = 1,474.92

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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.