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Finding the Fourth Proportional to 54.70, 75.49 and 30.14

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Solution

The fourth proportional to 54.70, 75.49 and 30.14 is: 41.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.70 : 75.49 = 30.14 : x
  2. Step 2: Convert to fraction form
    54.70/75.49 = 30.14/x
  3. Step 3: Cross multiply
    54.70x = 75.49 × 30.14
  4. Step 4: Simplify right side
    54.70x = 2,275.12
  5. Step 5: Solve for x
    x = 2,275.12/54.70
  6. Step 6: Final answer
    x = 41.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.