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Finding the Fourth Proportional to 57.01, 78.64 and 32.44

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Solution

The fourth proportional to 57.01, 78.64 and 32.44 is: 44.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.01 : 78.64 = 32.44 : x
  2. Step 2: Convert to fraction form
    57.01/78.64 = 32.44/x
  3. Step 3: Cross multiply
    57.01x = 78.64 × 32.44
  4. Step 4: Simplify right side
    57.01x = 2,551.08
  5. Step 5: Solve for x
    x = 2,551.08/57.01
  6. Step 6: Final answer
    x = 44.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.