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Finding the Fourth Proportional to 355.94, 491.51 and 262.85

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Solution

The fourth proportional to 355.94, 491.51 and 262.85 is: 362.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.94 : 491.51 = 262.85 : x
  2. Step 2: Convert to fraction form
    355.94/491.51 = 262.85/x
  3. Step 3: Cross multiply
    355.94x = 491.51 × 262.85
  4. Step 4: Simplify right side
    355.94x = 129,192.09
  5. Step 5: Solve for x
    x = 129,192.09/355.94
  6. Step 6: Final answer
    x = 362.96

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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.