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Finding the Fourth Proportional to 55.04, 76.30 and 54.08

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Solution

The fourth proportional to 55.04, 76.30 and 54.08 is: 74.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.04 : 76.30 = 54.08 : x
  2. Step 2: Convert to fraction form
    55.04/76.30 = 54.08/x
  3. Step 3: Cross multiply
    55.04x = 76.30 × 54.08
  4. Step 4: Simplify right side
    55.04x = 4,126.30
  5. Step 5: Solve for x
    x = 4,126.30/55.04
  6. Step 6: Final answer
    x = 74.97

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.