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Finding the Fourth Proportional to 333.42, 498.90 and 325.32

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Solution

The fourth proportional to 333.42, 498.90 and 325.32 is: 486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.42 : 498.90 = 325.32 : x
  2. Step 2: Convert to fraction form
    333.42/498.90 = 325.32/x
  3. Step 3: Cross multiply
    333.42x = 498.90 × 325.32
  4. Step 4: Simplify right side
    333.42x = 162,302.15
  5. Step 5: Solve for x
    x = 162,302.15/333.42
  6. Step 6: Final answer
    x = 486.78

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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.