Home / 1,177.20-1,766.08-355.72

Finding the Fourth Proportional to 1,177.20, 1,766.08 and 355.72

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Solution

The fourth proportional to 1,177.20, 1,766.08 and 355.72 is: 533.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.20 : 1,766.08 = 355.72 : x
  2. Step 2: Convert to fraction form
    1,177.20/1,766.08 = 355.72/x
  3. Step 3: Cross multiply
    1,177.20x = 1,766.08 × 355.72
  4. Step 4: Simplify right side
    1,177.20x = 628,229.98
  5. Step 5: Solve for x
    x = 628,229.98/1,177.20
  6. Step 6: Final answer
    x = 533.66

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Double scale
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1.5x scale

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.