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Finding the Fourth Proportional to 968.04, 1,335.21 and 935.89

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Solution

The fourth proportional to 968.04, 1,335.21 and 935.89 is: 1,290.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.04 : 1,335.21 = 935.89 : x
  2. Step 2: Convert to fraction form
    968.04/1,335.21 = 935.89/x
  3. Step 3: Cross multiply
    968.04x = 1,335.21 × 935.89
  4. Step 4: Simplify right side
    968.04x = 1,249,611.10
  5. Step 5: Solve for x
    x = 1,249,611.10/968.04
  6. Step 6: Final answer
    x = 1,290.87

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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.