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Finding the Fourth Proportional to 1,211.18, 1,816.77 and 968.18

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Solution

The fourth proportional to 1,211.18, 1,816.77 and 968.18 is: 1,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.18 : 1,816.77 = 968.18 : x
  2. Step 2: Convert to fraction form
    1,211.18/1,816.77 = 968.18/x
  3. Step 3: Cross multiply
    1,211.18x = 1,816.77 × 968.18
  4. Step 4: Simplify right side
    1,211.18x = 1,758,960.38
  5. Step 5: Solve for x
    x = 1,758,960.38/1,211.18
  6. Step 6: Final answer
    x = 1,452.27

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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.