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Finding the Fourth Proportional to 54.07, 74.62 and 34.67

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Solution

The fourth proportional to 54.07, 74.62 and 34.67 is: 47.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.07 : 74.62 = 34.67 : x
  2. Step 2: Convert to fraction form
    54.07/74.62 = 34.67/x
  3. Step 3: Cross multiply
    54.07x = 74.62 × 34.67
  4. Step 4: Simplify right side
    54.07x = 2,587.08
  5. Step 5: Solve for x
    x = 2,587.08/54.07
  6. Step 6: Final answer
    x = 47.85

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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.