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Finding the Fourth Proportional to 358.19, 494.07 and 247.76

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Solution

The fourth proportional to 358.19, 494.07 and 247.76 is: 341.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.19 : 494.07 = 247.76 : x
  2. Step 2: Convert to fraction form
    358.19/494.07 = 247.76/x
  3. Step 3: Cross multiply
    358.19x = 494.07 × 247.76
  4. Step 4: Simplify right side
    358.19x = 122,410.78
  5. Step 5: Solve for x
    x = 122,410.78/358.19
  6. Step 6: Final answer
    x = 341.75

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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.