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Finding the Fourth Proportional to 701.79, 968.50 and 387.08

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Solution

The fourth proportional to 701.79, 968.50 and 387.08 is: 534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.79 : 968.50 = 387.08 : x
  2. Step 2: Convert to fraction form
    701.79/968.50 = 387.08/x
  3. Step 3: Cross multiply
    701.79x = 968.50 × 387.08
  4. Step 4: Simplify right side
    701.79x = 374,880.20
  5. Step 5: Solve for x
    x = 374,880.20/701.79
  6. Step 6: Final answer
    x = 534.18

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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.