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Finding the Fourth Proportional to 1,167.04, 1,611.15 and 851.97

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Solution

The fourth proportional to 1,167.04, 1,611.15 and 851.97 is: 1,176.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167.04 : 1,611.15 = 851.97 : x
  2. Step 2: Convert to fraction form
    1,167.04/1,611.15 = 851.97/x
  3. Step 3: Cross multiply
    1,167.04x = 1,611.15 × 851.97
  4. Step 4: Simplify right side
    1,167.04x = 1,372,643.41
  5. Step 5: Solve for x
    x = 1,372,643.41/1,167.04
  6. Step 6: Final answer
    x = 1,176.18

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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.