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Finding the Fourth Proportional to 57.34, 86.33 and 49.51

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Solution

The fourth proportional to 57.34, 86.33 and 49.51 is: 74.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.34 : 86.33 = 49.51 : x
  2. Step 2: Convert to fraction form
    57.34/86.33 = 49.51/x
  3. Step 3: Cross multiply
    57.34x = 86.33 × 49.51
  4. Step 4: Simplify right side
    57.34x = 4,274.20
  5. Step 5: Solve for x
    x = 4,274.20/57.34
  6. Step 6: Final answer
    x = 74.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.