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Finding the Fourth Proportional to 701.85, 968.51 and 387.12

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Solution

The fourth proportional to 701.85, 968.51 and 387.12 is: 534.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.85 : 968.51 = 387.12 : x
  2. Step 2: Convert to fraction form
    701.85/968.51 = 387.12/x
  3. Step 3: Cross multiply
    701.85x = 968.51 × 387.12
  4. Step 4: Simplify right side
    701.85x = 374,924.75
  5. Step 5: Solve for x
    x = 374,924.75/701.85
  6. Step 6: Final answer
    x = 534.19

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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.