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Finding the Fourth Proportional to 868.89, 1,197.38 and 606.45

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Solution

The fourth proportional to 868.89, 1,197.38 and 606.45 is: 835.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.89 : 1,197.38 = 606.45 : x
  2. Step 2: Convert to fraction form
    868.89/1,197.38 = 606.45/x
  3. Step 3: Cross multiply
    868.89x = 1,197.38 × 606.45
  4. Step 4: Simplify right side
    868.89x = 726,157.11
  5. Step 5: Solve for x
    x = 726,157.11/868.89
  6. Step 6: Final answer
    x = 835.73

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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.