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Finding the Fourth Proportional to 203.21, 304.91 and 107

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Solution

The fourth proportional to 203.21, 304.91 and 107 is: 160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.21 : 304.91 = 107 : x
  2. Step 2: Convert to fraction form
    203.21/304.91 = 107/x
  3. Step 3: Cross multiply
    203.21x = 304.91 × 107
  4. Step 4: Simplify right side
    203.21x = 32,625.37
  5. Step 5: Solve for x
    x = 32,625.37/203.21
  6. Step 6: Final answer
    x = 160.55

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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.