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Finding the Fourth Proportional to 325.30, 489.85 and 234.63

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Solution

The fourth proportional to 325.30, 489.85 and 234.63 is: 353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.30 : 489.85 = 234.63 : x
  2. Step 2: Convert to fraction form
    325.30/489.85 = 234.63/x
  3. Step 3: Cross multiply
    325.30x = 489.85 × 234.63
  4. Step 4: Simplify right side
    325.30x = 114,933.51
  5. Step 5: Solve for x
    x = 114,933.51/325.30
  6. Step 6: Final answer
    x = 353.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.