Home / 1,102.24-1,652.46-408.46

Finding the Fourth Proportional to 1,102.24, 1,652.46 and 408.46

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Solution

The fourth proportional to 1,102.24, 1,652.46 and 408.46 is: 612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.24 : 1,652.46 = 408.46 : x
  2. Step 2: Convert to fraction form
    1,102.24/1,652.46 = 408.46/x
  3. Step 3: Cross multiply
    1,102.24x = 1,652.46 × 408.46
  4. Step 4: Simplify right side
    1,102.24x = 674,963.81
  5. Step 5: Solve for x
    x = 674,963.81/1,102.24
  6. Step 6: Final answer
    x = 612.36

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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.