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Finding the Fourth Proportional to 356.83, 492.21 and 263.82

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Solution

The fourth proportional to 356.83, 492.21 and 263.82 is: 363.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.83 : 492.21 = 263.82 : x
  2. Step 2: Convert to fraction form
    356.83/492.21 = 263.82/x
  3. Step 3: Cross multiply
    356.83x = 492.21 × 263.82
  4. Step 4: Simplify right side
    356.83x = 129,854.84
  5. Step 5: Solve for x
    x = 129,854.84/356.83
  6. Step 6: Final answer
    x = 363.91

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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.