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Finding the Fourth Proportional to 132.79, 183.15 and 89.05

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Solution

The fourth proportional to 132.79, 183.15 and 89.05 is: 122.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.79 : 183.15 = 89.05 : x
  2. Step 2: Convert to fraction form
    132.79/183.15 = 89.05/x
  3. Step 3: Cross multiply
    132.79x = 183.15 × 89.05
  4. Step 4: Simplify right side
    132.79x = 16,309.51
  5. Step 5: Solve for x
    x = 16,309.51/132.79
  6. Step 6: Final answer
    x = 122.82

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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.