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Finding the Fourth Proportional to 1,171.97, 1,617.05 and 700.02

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Solution

The fourth proportional to 1,171.97, 1,617.05 and 700.02 is: 965.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.97 : 1,617.05 = 700.02 : x
  2. Step 2: Convert to fraction form
    1,171.97/1,617.05 = 700.02/x
  3. Step 3: Cross multiply
    1,171.97x = 1,617.05 × 700.02
  4. Step 4: Simplify right side
    1,171.97x = 1,131,967.34
  5. Step 5: Solve for x
    x = 1,131,967.34/1,171.97
  6. Step 6: Final answer
    x = 965.87

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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.