Home / 1,018.20-1,527.36-324.96

Finding the Fourth Proportional to 1,018.20, 1,527.36 and 324.96

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Solution

The fourth proportional to 1,018.20, 1,527.36 and 324.96 is: 487.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018.20 : 1,527.36 = 324.96 : x
  2. Step 2: Convert to fraction form
    1,018.20/1,527.36 = 324.96/x
  3. Step 3: Cross multiply
    1,018.20x = 1,527.36 × 324.96
  4. Step 4: Simplify right side
    1,018.20x = 496,330.91
  5. Step 5: Solve for x
    x = 496,330.91/1,018.20
  6. Step 6: Final answer
    x = 487.46

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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.