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Finding the Fourth Proportional to 253.56, 377.40 and 247.89

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Solution

The fourth proportional to 253.56, 377.40 and 247.89 is: 368.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.56 : 377.40 = 247.89 : x
  2. Step 2: Convert to fraction form
    253.56/377.40 = 247.89/x
  3. Step 3: Cross multiply
    253.56x = 377.40 × 247.89
  4. Step 4: Simplify right side
    253.56x = 93,553.69
  5. Step 5: Solve for x
    x = 93,553.69/253.56
  6. Step 6: Final answer
    x = 368.96

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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.