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Finding the Fourth Proportional to 1,316.16, 1,974.26 and 767.97

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Solution

The fourth proportional to 1,316.16, 1,974.26 and 767.97 is: 1,151.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.16 : 1,974.26 = 767.97 : x
  2. Step 2: Convert to fraction form
    1,316.16/1,974.26 = 767.97/x
  3. Step 3: Cross multiply
    1,316.16x = 1,974.26 × 767.97
  4. Step 4: Simplify right side
    1,316.16x = 1,516,168.61
  5. Step 5: Solve for x
    x = 1,516,168.61/1,316.16
  6. Step 6: Final answer
    x = 1,151.96

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.