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Finding the Fourth Proportional to 358.65, 494.96 and 218.84

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Solution

The fourth proportional to 358.65, 494.96 and 218.84 is: 302.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.65 : 494.96 = 218.84 : x
  2. Step 2: Convert to fraction form
    358.65/494.96 = 218.84/x
  3. Step 3: Cross multiply
    358.65x = 494.96 × 218.84
  4. Step 4: Simplify right side
    358.65x = 108,313.48
  5. Step 5: Solve for x
    x = 108,313.48/358.65
  6. Step 6: Final answer
    x = 302.00

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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.