Home / 1,177.30-1,624.75-679.96

Finding the Fourth Proportional to 1,177.30, 1,624.75 and 679.96

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Solution

The fourth proportional to 1,177.30, 1,624.75 and 679.96 is: 938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.30 : 1,624.75 = 679.96 : x
  2. Step 2: Convert to fraction form
    1,177.30/1,624.75 = 679.96/x
  3. Step 3: Cross multiply
    1,177.30x = 1,624.75 × 679.96
  4. Step 4: Simplify right side
    1,177.30x = 1,104,759.25
  5. Step 5: Solve for x
    x = 1,104,759.25/1,177.30
  6. Step 6: Final answer
    x = 938.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.