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Finding the Fourth Proportional to 56.89, 85.37 and 34.11

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Solution

The fourth proportional to 56.89, 85.37 and 34.11 is: 51.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.89 : 85.37 = 34.11 : x
  2. Step 2: Convert to fraction form
    56.89/85.37 = 34.11/x
  3. Step 3: Cross multiply
    56.89x = 85.37 × 34.11
  4. Step 4: Simplify right side
    56.89x = 2,911.97
  5. Step 5: Solve for x
    x = 2,911.97/56.89
  6. Step 6: Final answer
    x = 51.19

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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.