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Finding the Fourth Proportional to 313.85, 433.12 and 173.98

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Solution

The fourth proportional to 313.85, 433.12 and 173.98 is: 240.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.85 : 433.12 = 173.98 : x
  2. Step 2: Convert to fraction form
    313.85/433.12 = 173.98/x
  3. Step 3: Cross multiply
    313.85x = 433.12 × 173.98
  4. Step 4: Simplify right side
    313.85x = 75,353.13
  5. Step 5: Solve for x
    x = 75,353.13/313.85
  6. Step 6: Final answer
    x = 240.09

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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.