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Finding the Fourth Proportional to 250.21, 374.70 and 172.97

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Solution

The fourth proportional to 250.21, 374.70 and 172.97 is: 259.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.21 : 374.70 = 172.97 : x
  2. Step 2: Convert to fraction form
    250.21/374.70 = 172.97/x
  3. Step 3: Cross multiply
    250.21x = 374.70 × 172.97
  4. Step 4: Simplify right side
    250.21x = 64,809.99
  5. Step 5: Solve for x
    x = 64,809.99/250.21
  6. Step 6: Final answer
    x = 259.03

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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.