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Finding the Fourth Proportional to 374.03, 515.78 and 249.56

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Solution

The fourth proportional to 374.03, 515.78 and 249.56 is: 344.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.03 : 515.78 = 249.56 : x
  2. Step 2: Convert to fraction form
    374.03/515.78 = 249.56/x
  3. Step 3: Cross multiply
    374.03x = 515.78 × 249.56
  4. Step 4: Simplify right side
    374.03x = 128,715.48
  5. Step 5: Solve for x
    x = 128,715.48/374.03
  6. Step 6: Final answer
    x = 344.14

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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.