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Finding the Fourth Proportional to 38.86, 53.33 and 35.22

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Solution

The fourth proportional to 38.86, 53.33 and 35.22 is: 48.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.86 : 53.33 = 35.22 : x
  2. Step 2: Convert to fraction form
    38.86/53.33 = 35.22/x
  3. Step 3: Cross multiply
    38.86x = 53.33 × 35.22
  4. Step 4: Simplify right side
    38.86x = 1,878.28
  5. Step 5: Solve for x
    x = 1,878.28/38.86
  6. Step 6: Final answer
    x = 48.33

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.