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Finding the Fourth Proportional to 355.29, 531.86 and 192.48

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Solution

The fourth proportional to 355.29, 531.86 and 192.48 is: 288.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.29 : 531.86 = 192.48 : x
  2. Step 2: Convert to fraction form
    355.29/531.86 = 192.48/x
  3. Step 3: Cross multiply
    355.29x = 531.86 × 192.48
  4. Step 4: Simplify right side
    355.29x = 102,371.45
  5. Step 5: Solve for x
    x = 102,371.45/355.29
  6. Step 6: Final answer
    x = 288.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.