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Finding the Fourth Proportional to 55.08, 82.52 and 53.05

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Solution

The fourth proportional to 55.08, 82.52 and 53.05 is: 79.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.08 : 82.52 = 53.05 : x
  2. Step 2: Convert to fraction form
    55.08/82.52 = 53.05/x
  3. Step 3: Cross multiply
    55.08x = 82.52 × 53.05
  4. Step 4: Simplify right side
    55.08x = 4,377.92
  5. Step 5: Solve for x
    x = 4,377.92/55.08
  6. Step 6: Final answer
    x = 79.49

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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.