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Finding the Fourth Proportional to 55.98, 84.45 and 53.46

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Solution

The fourth proportional to 55.98, 84.45 and 53.46 is: 80.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.98 : 84.45 = 53.46 : x
  2. Step 2: Convert to fraction form
    55.98/84.45 = 53.46/x
  3. Step 3: Cross multiply
    55.98x = 84.45 × 53.46
  4. Step 4: Simplify right side
    55.98x = 4,514.90
  5. Step 5: Solve for x
    x = 4,514.90/55.98
  6. Step 6: Final answer
    x = 80.65

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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.