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Finding the Fourth Proportional to 89.07, 132.84 and 83.01

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Solution

The fourth proportional to 89.07, 132.84 and 83.01 is: 123.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.07 : 132.84 = 83.01 : x
  2. Step 2: Convert to fraction form
    89.07/132.84 = 83.01/x
  3. Step 3: Cross multiply
    89.07x = 132.84 × 83.01
  4. Step 4: Simplify right side
    89.07x = 11,027.05
  5. Step 5: Solve for x
    x = 11,027.05/89.07
  6. Step 6: Final answer
    x = 123.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.