Home / 1,170.20-1,615.25-698.44

Finding the Fourth Proportional to 1,170.20, 1,615.25 and 698.44

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Solution

The fourth proportional to 1,170.20, 1,615.25 and 698.44 is: 964.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170.20 : 1,615.25 = 698.44 : x
  2. Step 2: Convert to fraction form
    1,170.20/1,615.25 = 698.44/x
  3. Step 3: Cross multiply
    1,170.20x = 1,615.25 × 698.44
  4. Step 4: Simplify right side
    1,170.20x = 1,128,155.21
  5. Step 5: Solve for x
    x = 1,128,155.21/1,170.20
  6. Step 6: Final answer
    x = 964.07

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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.