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Finding the Fourth Proportional to 203.98, 305.94 and 59.71

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Solution

The fourth proportional to 203.98, 305.94 and 59.71 is: 89.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.98 : 305.94 = 59.71 : x
  2. Step 2: Convert to fraction form
    203.98/305.94 = 59.71/x
  3. Step 3: Cross multiply
    203.98x = 305.94 × 59.71
  4. Step 4: Simplify right side
    203.98x = 18,267.68
  5. Step 5: Solve for x
    x = 18,267.68/203.98
  6. Step 6: Final answer
    x = 89.56

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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.