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Finding the Fourth Proportional to 358.34, 494.64 and 248.18

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Solution

The fourth proportional to 358.34, 494.64 and 248.18 is: 342.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.34 : 494.64 = 248.18 : x
  2. Step 2: Convert to fraction form
    358.34/494.64 = 248.18/x
  3. Step 3: Cross multiply
    358.34x = 494.64 × 248.18
  4. Step 4: Simplify right side
    358.34x = 122,759.76
  5. Step 5: Solve for x
    x = 122,759.76/358.34
  6. Step 6: Final answer
    x = 342.58

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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.