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Finding the Fourth Proportional to 233.14, 349.80 and 172.78

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Solution

The fourth proportional to 233.14, 349.80 and 172.78 is: 259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.14 : 349.80 = 172.78 : x
  2. Step 2: Convert to fraction form
    233.14/349.80 = 172.78/x
  3. Step 3: Cross multiply
    233.14x = 349.80 × 172.78
  4. Step 4: Simplify right side
    233.14x = 60,438.44
  5. Step 5: Solve for x
    x = 60,438.44/233.14
  6. Step 6: Final answer
    x = 259.24

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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.