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Finding the Fourth Proportional to 253.28, 378.10 and 224.36

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Solution

The fourth proportional to 253.28, 378.10 and 224.36 is: 334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.28 : 378.10 = 224.36 : x
  2. Step 2: Convert to fraction form
    253.28/378.10 = 224.36/x
  3. Step 3: Cross multiply
    253.28x = 378.10 × 224.36
  4. Step 4: Simplify right side
    253.28x = 84,830.52
  5. Step 5: Solve for x
    x = 84,830.52/253.28
  6. Step 6: Final answer
    x = 334.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.