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Finding the Fourth Proportional to 906.97, 1,358.88 and 713.22

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Solution

The fourth proportional to 906.97, 1,358.88 and 713.22 is: 1,068.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.97 : 1,358.88 = 713.22 : x
  2. Step 2: Convert to fraction form
    906.97/1,358.88 = 713.22/x
  3. Step 3: Cross multiply
    906.97x = 1,358.88 × 713.22
  4. Step 4: Simplify right side
    906.97x = 969,180.39
  5. Step 5: Solve for x
    x = 969,180.39/906.97
  6. Step 6: Final answer
    x = 1,068.59

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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.