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Finding the Fourth Proportional to 321.30, 479.22 and 292.14

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Solution

The fourth proportional to 321.30, 479.22 and 292.14 is: 435.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.30 : 479.22 = 292.14 : x
  2. Step 2: Convert to fraction form
    321.30/479.22 = 292.14/x
  3. Step 3: Cross multiply
    321.30x = 479.22 × 292.14
  4. Step 4: Simplify right side
    321.30x = 139,999.33
  5. Step 5: Solve for x
    x = 139,999.33/321.30
  6. Step 6: Final answer
    x = 435.73

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.