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Finding the Fourth Proportional to 433.68, 648.96 and 325.36

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Solution

The fourth proportional to 433.68, 648.96 and 325.36 is: 486.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.68 : 648.96 = 325.36 : x
  2. Step 2: Convert to fraction form
    433.68/648.96 = 325.36/x
  3. Step 3: Cross multiply
    433.68x = 648.96 × 325.36
  4. Step 4: Simplify right side
    433.68x = 211,145.63
  5. Step 5: Solve for x
    x = 211,145.63/433.68
  6. Step 6: Final answer
    x = 486.87

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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.