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Finding the Fourth Proportional to 53.27, 80.28 and 52.81

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Solution

The fourth proportional to 53.27, 80.28 and 52.81 is: 79.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.27 : 80.28 = 52.81 : x
  2. Step 2: Convert to fraction form
    53.27/80.28 = 52.81/x
  3. Step 3: Cross multiply
    53.27x = 80.28 × 52.81
  4. Step 4: Simplify right side
    53.27x = 4,239.59
  5. Step 5: Solve for x
    x = 4,239.59/53.27
  6. Step 6: Final answer
    x = 79.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.