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Finding the Fourth Proportional to 701.60, 968.91 and 578.48

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Solution

The fourth proportional to 701.60, 968.91 and 578.48 is: 798.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.60 : 968.91 = 578.48 : x
  2. Step 2: Convert to fraction form
    701.60/968.91 = 578.48/x
  3. Step 3: Cross multiply
    701.60x = 968.91 × 578.48
  4. Step 4: Simplify right side
    701.60x = 560,495.06
  5. Step 5: Solve for x
    x = 560,495.06/701.60
  6. Step 6: Final answer
    x = 798.88

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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.