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Finding the Fourth Proportional to 55.87, 83.28 and 55.03

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Solution

The fourth proportional to 55.87, 83.28 and 55.03 is: 82.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.87 : 83.28 = 55.03 : x
  2. Step 2: Convert to fraction form
    55.87/83.28 = 55.03/x
  3. Step 3: Cross multiply
    55.87x = 83.28 × 55.03
  4. Step 4: Simplify right side
    55.87x = 4,582.90
  5. Step 5: Solve for x
    x = 4,582.90/55.87
  6. Step 6: Final answer
    x = 82.03

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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.