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Finding the Fourth Proportional to 429.60, 593.28 and 274.56

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Solution

The fourth proportional to 429.60, 593.28 and 274.56 is: 379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    429.60 : 593.28 = 274.56 : x
  2. Step 2: Convert to fraction form
    429.60/593.28 = 274.56/x
  3. Step 3: Cross multiply
    429.60x = 593.28 × 274.56
  4. Step 4: Simplify right side
    429.60x = 162,890.96
  5. Step 5: Solve for x
    x = 162,890.96/429.60
  6. Step 6: Final answer
    x = 379.17

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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.