Home / 1,102.20-1,653.10-452.18

Finding the Fourth Proportional to 1,102.20, 1,653.10 and 452.18

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Solution

The fourth proportional to 1,102.20, 1,653.10 and 452.18 is: 678.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.20 : 1,653.10 = 452.18 : x
  2. Step 2: Convert to fraction form
    1,102.20/1,653.10 = 452.18/x
  3. Step 3: Cross multiply
    1,102.20x = 1,653.10 × 452.18
  4. Step 4: Simplify right side
    1,102.20x = 747,498.76
  5. Step 5: Solve for x
    x = 747,498.76/1,102.20
  6. Step 6: Final answer
    x = 678.19

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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.