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Finding the Fourth Proportional to 496.53, 684.72 and 330.57

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Solution

The fourth proportional to 496.53, 684.72 and 330.57 is: 455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.53 : 684.72 = 330.57 : x
  2. Step 2: Convert to fraction form
    496.53/684.72 = 330.57/x
  3. Step 3: Cross multiply
    496.53x = 684.72 × 330.57
  4. Step 4: Simplify right side
    496.53x = 226,347.89
  5. Step 5: Solve for x
    x = 226,347.89/496.53
  6. Step 6: Final answer
    x = 455.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.