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Finding the Fourth Proportional to 968.06, 1,333.56 and 672.86

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Solution

The fourth proportional to 968.06, 1,333.56 and 672.86 is: 926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.06 : 1,333.56 = 672.86 : x
  2. Step 2: Convert to fraction form
    968.06/1,333.56 = 672.86/x
  3. Step 3: Cross multiply
    968.06x = 1,333.56 × 672.86
  4. Step 4: Simplify right side
    968.06x = 897,299.18
  5. Step 5: Solve for x
    x = 897,299.18/968.06
  6. Step 6: Final answer
    x = 926.90

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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.