Home / 1,108.24-1,662.04-621.52

Finding the Fourth Proportional to 1,108.24, 1,662.04 and 621.52

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Solution

The fourth proportional to 1,108.24, 1,662.04 and 621.52 is: 932.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.24 : 1,662.04 = 621.52 : x
  2. Step 2: Convert to fraction form
    1,108.24/1,662.04 = 621.52/x
  3. Step 3: Cross multiply
    1,108.24x = 1,662.04 × 621.52
  4. Step 4: Simplify right side
    1,108.24x = 1,032,991.10
  5. Step 5: Solve for x
    x = 1,032,991.10/1,108.24
  6. Step 6: Final answer
    x = 932.10

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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.