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Finding the Fourth Proportional to 35.41, 53.10 and 13.75

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Solution

The fourth proportional to 35.41, 53.10 and 13.75 is: 20.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.41 : 53.10 = 13.75 : x
  2. Step 2: Convert to fraction form
    35.41/53.10 = 13.75/x
  3. Step 3: Cross multiply
    35.41x = 53.10 × 13.75
  4. Step 4: Simplify right side
    35.41x = 729.79
  5. Step 5: Solve for x
    x = 729.79/35.41
  6. Step 6: Final answer
    x = 20.61

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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.