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Finding the Fourth Proportional to 53.37, 80.28 and 51.39

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Solution

The fourth proportional to 53.37, 80.28 and 51.39 is: 77.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.37 : 80.28 = 51.39 : x
  2. Step 2: Convert to fraction form
    53.37/80.28 = 51.39/x
  3. Step 3: Cross multiply
    53.37x = 80.28 × 51.39
  4. Step 4: Simplify right side
    53.37x = 4,125.59
  5. Step 5: Solve for x
    x = 4,125.59/53.37
  6. Step 6: Final answer
    x = 77.30

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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.