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Finding the Fourth Proportional to 358.98, 494.86 and 248.27

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Solution

The fourth proportional to 358.98, 494.86 and 248.27 is: 342.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.98 : 494.86 = 248.27 : x
  2. Step 2: Convert to fraction form
    358.98/494.86 = 248.27/x
  3. Step 3: Cross multiply
    358.98x = 494.86 × 248.27
  4. Step 4: Simplify right side
    358.98x = 122,858.89
  5. Step 5: Solve for x
    x = 122,858.89/358.98
  6. Step 6: Final answer
    x = 342.24

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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.