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Finding the Fourth Proportional to 38.83, 53.62 and 34.94

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Solution

The fourth proportional to 38.83, 53.62 and 34.94 is: 48.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.83 : 53.62 = 34.94 : x
  2. Step 2: Convert to fraction form
    38.83/53.62 = 34.94/x
  3. Step 3: Cross multiply
    38.83x = 53.62 × 34.94
  4. Step 4: Simplify right side
    38.83x = 1,873.48
  5. Step 5: Solve for x
    x = 1,873.48/38.83
  6. Step 6: Final answer
    x = 48.25

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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.