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Finding the Fourth Proportional to 53.61, 79.84 and 50.97

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Solution

The fourth proportional to 53.61, 79.84 and 50.97 is: 75.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.61 : 79.84 = 50.97 : x
  2. Step 2: Convert to fraction form
    53.61/79.84 = 50.97/x
  3. Step 3: Cross multiply
    53.61x = 79.84 × 50.97
  4. Step 4: Simplify right side
    53.61x = 4,069.81
  5. Step 5: Solve for x
    x = 4,069.81/53.61
  6. Step 6: Final answer
    x = 75.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.