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Finding the Fourth Proportional to 701.87, 968.50 and 407.15

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Solution

The fourth proportional to 701.87, 968.50 and 407.15 is: 561.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.87 : 968.50 = 407.15 : x
  2. Step 2: Convert to fraction form
    701.87/968.50 = 407.15/x
  3. Step 3: Cross multiply
    701.87x = 968.50 × 407.15
  4. Step 4: Simplify right side
    701.87x = 394,324.78
  5. Step 5: Solve for x
    x = 394,324.78/701.87
  6. Step 6: Final answer
    x = 561.82

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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.