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Finding the Fourth Proportional to 301.74, 415.58 and 270.78

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Solution

The fourth proportional to 301.74, 415.58 and 270.78 is: 372.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.74 : 415.58 = 270.78 : x
  2. Step 2: Convert to fraction form
    301.74/415.58 = 270.78/x
  3. Step 3: Cross multiply
    301.74x = 415.58 × 270.78
  4. Step 4: Simplify right side
    301.74x = 112,529.40
  5. Step 5: Solve for x
    x = 112,529.40/301.74
  6. Step 6: Final answer
    x = 372.93

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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.