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Finding the Fourth Proportional to 701.76, 968.28 and 422.16

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Solution

The fourth proportional to 701.76, 968.28 and 422.16 is: 582.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.76 : 968.28 = 422.16 : x
  2. Step 2: Convert to fraction form
    701.76/968.28 = 422.16/x
  3. Step 3: Cross multiply
    701.76x = 968.28 × 422.16
  4. Step 4: Simplify right side
    701.76x = 408,769.08
  5. Step 5: Solve for x
    x = 408,769.08/701.76
  6. Step 6: Final answer
    x = 582.49

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1.5x scale

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.