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Finding the Fourth Proportional to 968.27, 1,334.88 and 649.11

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Solution

The fourth proportional to 968.27, 1,334.88 and 649.11 is: 894.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.27 : 1,334.88 = 649.11 : x
  2. Step 2: Convert to fraction form
    968.27/1,334.88 = 649.11/x
  3. Step 3: Cross multiply
    968.27x = 1,334.88 × 649.11
  4. Step 4: Simplify right side
    968.27x = 866,483.96
  5. Step 5: Solve for x
    x = 866,483.96/968.27
  6. Step 6: Final answer
    x = 894.88

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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.