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Finding the Fourth Proportional to 348.04, 479.31 and 274.24

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Solution

The fourth proportional to 348.04, 479.31 and 274.24 is: 377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.04 : 479.31 = 274.24 : x
  2. Step 2: Convert to fraction form
    348.04/479.31 = 274.24/x
  3. Step 3: Cross multiply
    348.04x = 479.31 × 274.24
  4. Step 4: Simplify right side
    348.04x = 131,445.97
  5. Step 5: Solve for x
    x = 131,445.97/348.04
  6. Step 6: Final answer
    x = 377.67

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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.