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Finding the Fourth Proportional to 52.58, 78.86 and 34.56

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Solution

The fourth proportional to 52.58, 78.86 and 34.56 is: 51.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.58 : 78.86 = 34.56 : x
  2. Step 2: Convert to fraction form
    52.58/78.86 = 34.56/x
  3. Step 3: Cross multiply
    52.58x = 78.86 × 34.56
  4. Step 4: Simplify right side
    52.58x = 2,725.49
  5. Step 5: Solve for x
    x = 2,725.49/52.58
  6. Step 6: Final answer
    x = 51.83

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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.