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Finding the Fourth Proportional to 53.79, 80.63 and 37.28

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Solution

The fourth proportional to 53.79, 80.63 and 37.28 is: 55.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.79 : 80.63 = 37.28 : x
  2. Step 2: Convert to fraction form
    53.79/80.63 = 37.28/x
  3. Step 3: Cross multiply
    53.79x = 80.63 × 37.28
  4. Step 4: Simplify right side
    53.79x = 3,006.04
  5. Step 5: Solve for x
    x = 3,006.04/53.79
  6. Step 6: Final answer
    x = 55.89

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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.