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Finding the Fourth Proportional to 46.51, 69.78 and 39.27

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Solution

The fourth proportional to 46.51, 69.78 and 39.27 is: 58.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.51 : 69.78 = 39.27 : x
  2. Step 2: Convert to fraction form
    46.51/69.78 = 39.27/x
  3. Step 3: Cross multiply
    46.51x = 69.78 × 39.27
  4. Step 4: Simplify right side
    46.51x = 2,740.25
  5. Step 5: Solve for x
    x = 2,740.25/46.51
  6. Step 6: Final answer
    x = 58.92

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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.