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Finding the Fourth Proportional to 207.89, 285.98 and 174.68

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Solution

The fourth proportional to 207.89, 285.98 and 174.68 is: 240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.89 : 285.98 = 174.68 : x
  2. Step 2: Convert to fraction form
    207.89/285.98 = 174.68/x
  3. Step 3: Cross multiply
    207.89x = 285.98 × 174.68
  4. Step 4: Simplify right side
    207.89x = 49,954.99
  5. Step 5: Solve for x
    x = 49,954.99/207.89
  6. Step 6: Final answer
    x = 240.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.