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Finding the Fourth Proportional to 71.56, 107.37 and 35.50

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Solution

The fourth proportional to 71.56, 107.37 and 35.50 is: 53.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.56 : 107.37 = 35.50 : x
  2. Step 2: Convert to fraction form
    71.56/107.37 = 35.50/x
  3. Step 3: Cross multiply
    71.56x = 107.37 × 35.50
  4. Step 4: Simplify right side
    71.56x = 3,811.64
  5. Step 5: Solve for x
    x = 3,811.64/71.56
  6. Step 6: Final answer
    x = 53.26

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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.