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Finding the Fourth Proportional to 233.02, 348.94 and 172.20

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Solution

The fourth proportional to 233.02, 348.94 and 172.20 is: 257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.02 : 348.94 = 172.20 : x
  2. Step 2: Convert to fraction form
    233.02/348.94 = 172.20/x
  3. Step 3: Cross multiply
    233.02x = 348.94 × 172.20
  4. Step 4: Simplify right side
    233.02x = 60,087.47
  5. Step 5: Solve for x
    x = 60,087.47/233.02
  6. Step 6: Final answer
    x = 257.86

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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.