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Finding the Fourth Proportional to 688.97, 948.38 and 601.49

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Solution

The fourth proportional to 688.97, 948.38 and 601.49 is: 827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.97 : 948.38 = 601.49 : x
  2. Step 2: Convert to fraction form
    688.97/948.38 = 601.49/x
  3. Step 3: Cross multiply
    688.97x = 948.38 × 601.49
  4. Step 4: Simplify right side
    688.97x = 570,433.34
  5. Step 5: Solve for x
    x = 570,433.34/688.97
  6. Step 6: Final answer
    x = 827.96

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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.