Home / 1,308.19-1,961.77-577.25

Finding the Fourth Proportional to 1,308.19, 1,961.77 and 577.25

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Solution

The fourth proportional to 1,308.19, 1,961.77 and 577.25 is: 865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.19 : 1,961.77 = 577.25 : x
  2. Step 2: Convert to fraction form
    1,308.19/1,961.77 = 577.25/x
  3. Step 3: Cross multiply
    1,308.19x = 1,961.77 × 577.25
  4. Step 4: Simplify right side
    1,308.19x = 1,132,431.73
  5. Step 5: Solve for x
    x = 1,132,431.73/1,308.19
  6. Step 6: Final answer
    x = 865.65

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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.