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Finding the Fourth Proportional to 968.05, 1,335.90 and 525.95

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Solution

The fourth proportional to 968.05, 1,335.90 and 525.95 is: 725.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.05 : 1,335.90 = 525.95 : x
  2. Step 2: Convert to fraction form
    968.05/1,335.90 = 525.95/x
  3. Step 3: Cross multiply
    968.05x = 1,335.90 × 525.95
  4. Step 4: Simplify right side
    968.05x = 702,616.61
  5. Step 5: Solve for x
    x = 702,616.61/968.05
  6. Step 6: Final answer
    x = 725.81

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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.