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Finding the Fourth Proportional to 57.92, 87.05 and 48.35

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Solution

The fourth proportional to 57.92, 87.05 and 48.35 is: 72.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.92 : 87.05 = 48.35 : x
  2. Step 2: Convert to fraction form
    57.92/87.05 = 48.35/x
  3. Step 3: Cross multiply
    57.92x = 87.05 × 48.35
  4. Step 4: Simplify right side
    57.92x = 4,208.87
  5. Step 5: Solve for x
    x = 4,208.87/57.92
  6. Step 6: Final answer
    x = 72.67

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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.