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Finding the Fourth Proportional to 357.38, 493.42 and 270.44

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Solution

The fourth proportional to 357.38, 493.42 and 270.44 is: 373.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.38 : 493.42 = 270.44 : x
  2. Step 2: Convert to fraction form
    357.38/493.42 = 270.44/x
  3. Step 3: Cross multiply
    357.38x = 493.42 × 270.44
  4. Step 4: Simplify right side
    357.38x = 133,440.50
  5. Step 5: Solve for x
    x = 133,440.50/357.38
  6. Step 6: Final answer
    x = 373.39

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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.