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Finding the Fourth Proportional to 325.19, 488.55 and 203.54

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Solution

The fourth proportional to 325.19, 488.55 and 203.54 is: 305.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.19 : 488.55 = 203.54 : x
  2. Step 2: Convert to fraction form
    325.19/488.55 = 203.54/x
  3. Step 3: Cross multiply
    325.19x = 488.55 × 203.54
  4. Step 4: Simplify right side
    325.19x = 99,438.45
  5. Step 5: Solve for x
    x = 99,438.45/325.19
  6. Step 6: Final answer
    x = 305.79

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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.