Home / 1,177.93-1,767.10-408.25

Finding the Fourth Proportional to 1,177.93, 1,767.10 and 408.25

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Solution

The fourth proportional to 1,177.93, 1,767.10 and 408.25 is: 612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.93 : 1,767.10 = 408.25 : x
  2. Step 2: Convert to fraction form
    1,177.93/1,767.10 = 408.25/x
  3. Step 3: Cross multiply
    1,177.93x = 1,767.10 × 408.25
  4. Step 4: Simplify right side
    1,177.93x = 721,418.58
  5. Step 5: Solve for x
    x = 721,418.58/1,177.93
  6. Step 6: Final answer
    x = 612.45

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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.