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Finding the Fourth Proportional to 95.81, 132.25 and 56.99

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Solution

The fourth proportional to 95.81, 132.25 and 56.99 is: 78.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.81 : 132.25 = 56.99 : x
  2. Step 2: Convert to fraction form
    95.81/132.25 = 56.99/x
  3. Step 3: Cross multiply
    95.81x = 132.25 × 56.99
  4. Step 4: Simplify right side
    95.81x = 7,537.33
  5. Step 5: Solve for x
    x = 7,537.33/95.81
  6. Step 6: Final answer
    x = 78.67

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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.