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Finding the Fourth Proportional to 57.33, 85.87 and 30.22

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Solution

The fourth proportional to 57.33, 85.87 and 30.22 is: 45.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.33 : 85.87 = 30.22 : x
  2. Step 2: Convert to fraction form
    57.33/85.87 = 30.22/x
  3. Step 3: Cross multiply
    57.33x = 85.87 × 30.22
  4. Step 4: Simplify right side
    57.33x = 2,594.99
  5. Step 5: Solve for x
    x = 2,594.99/57.33
  6. Step 6: Final answer
    x = 45.26

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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.