Home / 1,177.08-1,765.45-355.11

Finding the Fourth Proportional to 1,177.08, 1,765.45 and 355.11

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Solution

The fourth proportional to 1,177.08, 1,765.45 and 355.11 is: 532.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.08 : 1,765.45 = 355.11 : x
  2. Step 2: Convert to fraction form
    1,177.08/1,765.45 = 355.11/x
  3. Step 3: Cross multiply
    1,177.08x = 1,765.45 × 355.11
  4. Step 4: Simplify right side
    1,177.08x = 626,928.95
  5. Step 5: Solve for x
    x = 626,928.95/1,177.08
  6. Step 6: Final answer
    x = 532.61

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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.