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Finding the Fourth Proportional to 63.56, 94.79 and 57.08

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Solution

The fourth proportional to 63.56, 94.79 and 57.08 is: 85.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.56 : 94.79 = 57.08 : x
  2. Step 2: Convert to fraction form
    63.56/94.79 = 57.08/x
  3. Step 3: Cross multiply
    63.56x = 94.79 × 57.08
  4. Step 4: Simplify right side
    63.56x = 5,409.85
  5. Step 5: Solve for x
    x = 5,409.85/63.56
  6. Step 6: Final answer
    x = 85.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.