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Finding the Fourth Proportional to 55.10, 82.14 and 49.25

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Solution

The fourth proportional to 55.10, 82.14 and 49.25 is: 73.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.10 : 82.14 = 49.25 : x
  2. Step 2: Convert to fraction form
    55.10/82.14 = 49.25/x
  3. Step 3: Cross multiply
    55.10x = 82.14 × 49.25
  4. Step 4: Simplify right side
    55.10x = 4,044.98
  5. Step 5: Solve for x
    x = 4,044.98/55.10
  6. Step 6: Final answer
    x = 73.42

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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.