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Finding the Fourth Proportional to 53.93, 81 and 52.83

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Solution

The fourth proportional to 53.93, 81 and 52.83 is: 79.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.93 : 81 = 52.83 : x
  2. Step 2: Convert to fraction form
    53.93/81 = 52.83/x
  3. Step 3: Cross multiply
    53.93x = 81 × 52.83
  4. Step 4: Simplify right side
    53.93x = 4,279.23
  5. Step 5: Solve for x
    x = 4,279.23/53.93
  6. Step 6: Final answer
    x = 79.36

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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.