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Finding the Fourth Proportional to 173.02, 258.86 and 147

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Solution

The fourth proportional to 173.02, 258.86 and 147 is: 219.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.02 : 258.86 = 147 : x
  2. Step 2: Convert to fraction form
    173.02/258.86 = 147/x
  3. Step 3: Cross multiply
    173.02x = 258.86 × 147
  4. Step 4: Simplify right side
    173.02x = 38,052.42
  5. Step 5: Solve for x
    x = 38,052.42/173.02
  6. Step 6: Final answer
    x = 219.93

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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.