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Finding the Fourth Proportional to 343.03, 472.82 and 255.67

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Solution

The fourth proportional to 343.03, 472.82 and 255.67 is: 352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.03 : 472.82 = 255.67 : x
  2. Step 2: Convert to fraction form
    343.03/472.82 = 255.67/x
  3. Step 3: Cross multiply
    343.03x = 472.82 × 255.67
  4. Step 4: Simplify right side
    343.03x = 120,884.61
  5. Step 5: Solve for x
    x = 120,884.61/343.03
  6. Step 6: Final answer
    x = 352.40

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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.