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Finding the Fourth Proportional to 355.65, 491.26 and 244.93

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Solution

The fourth proportional to 355.65, 491.26 and 244.93 is: 338.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.65 : 491.26 = 244.93 : x
  2. Step 2: Convert to fraction form
    355.65/491.26 = 244.93/x
  3. Step 3: Cross multiply
    355.65x = 491.26 × 244.93
  4. Step 4: Simplify right side
    355.65x = 120,324.31
  5. Step 5: Solve for x
    x = 120,324.31/355.65
  6. Step 6: Final answer
    x = 338.32

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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.