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Finding the Fourth Proportional to 45.16, 67.80 and 35.56

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Solution

The fourth proportional to 45.16, 67.80 and 35.56 is: 53.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.16 : 67.80 = 35.56 : x
  2. Step 2: Convert to fraction form
    45.16/67.80 = 35.56/x
  3. Step 3: Cross multiply
    45.16x = 67.80 × 35.56
  4. Step 4: Simplify right side
    45.16x = 2,410.97
  5. Step 5: Solve for x
    x = 2,410.97/45.16
  6. Step 6: Final answer
    x = 53.39

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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.