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Finding the Fourth Proportional to 35.28, 52.90 and 27.76

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Solution

The fourth proportional to 35.28, 52.90 and 27.76 is: 41.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.28 : 52.90 = 27.76 : x
  2. Step 2: Convert to fraction form
    35.28/52.90 = 27.76/x
  3. Step 3: Cross multiply
    35.28x = 52.90 × 27.76
  4. Step 4: Simplify right side
    35.28x = 1,468.50
  5. Step 5: Solve for x
    x = 1,468.50/35.28
  6. Step 6: Final answer
    x = 41.62

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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.