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Finding the Fourth Proportional to 253.55, 377.09 and 248.36

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Solution

The fourth proportional to 253.55, 377.09 and 248.36 is: 369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.55 : 377.09 = 248.36 : x
  2. Step 2: Convert to fraction form
    253.55/377.09 = 248.36/x
  3. Step 3: Cross multiply
    253.55x = 377.09 × 248.36
  4. Step 4: Simplify right side
    253.55x = 93,650.95
  5. Step 5: Solve for x
    x = 93,650.95/253.55
  6. Step 6: Final answer
    x = 369.37

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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.