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Finding the Fourth Proportional to 54.07, 80.91 and 46.87

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Solution

The fourth proportional to 54.07, 80.91 and 46.87 is: 70.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.07 : 80.91 = 46.87 : x
  2. Step 2: Convert to fraction form
    54.07/80.91 = 46.87/x
  3. Step 3: Cross multiply
    54.07x = 80.91 × 46.87
  4. Step 4: Simplify right side
    54.07x = 3,792.11
  5. Step 5: Solve for x
    x = 3,792.11/54.07
  6. Step 6: Final answer
    x = 70.14

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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.