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Finding the Fourth Proportional to 52.31, 78.48 and 27.94

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Solution

The fourth proportional to 52.31, 78.48 and 27.94 is: 41.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.31 : 78.48 = 27.94 : x
  2. Step 2: Convert to fraction form
    52.31/78.48 = 27.94/x
  3. Step 3: Cross multiply
    52.31x = 78.48 × 27.94
  4. Step 4: Simplify right side
    52.31x = 2,192.54
  5. Step 5: Solve for x
    x = 2,192.54/52.31
  6. Step 6: Final answer
    x = 41.91

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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.