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Finding the Fourth Proportional to 89, 133.50 and 83.48

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Solution

The fourth proportional to 89, 133.50 and 83.48 is: 125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89 : 133.50 = 83.48 : x
  2. Step 2: Convert to fraction form
    89/133.50 = 83.48/x
  3. Step 3: Cross multiply
    89x = 133.50 × 83.48
  4. Step 4: Simplify right side
    89x = 11,144.58
  5. Step 5: Solve for x
    x = 11,144.58/89
  6. Step 6: Final answer
    x = 125.22

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.