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Finding the Fourth Proportional to 968.88, 1,337.96 and 659.28

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Solution

The fourth proportional to 968.88, 1,337.96 and 659.28 is: 910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.88 : 1,337.96 = 659.28 : x
  2. Step 2: Convert to fraction form
    968.88/1,337.96 = 659.28/x
  3. Step 3: Cross multiply
    968.88x = 1,337.96 × 659.28
  4. Step 4: Simplify right side
    968.88x = 882,090.27
  5. Step 5: Solve for x
    x = 882,090.27/968.88
  6. Step 6: Final answer
    x = 910.42

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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.