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Finding the Fourth Proportional to 495.96, 684.62 and 330.12

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Solution

The fourth proportional to 495.96, 684.62 and 330.12 is: 455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.96 : 684.62 = 330.12 : x
  2. Step 2: Convert to fraction form
    495.96/684.62 = 330.12/x
  3. Step 3: Cross multiply
    495.96x = 684.62 × 330.12
  4. Step 4: Simplify right side
    495.96x = 226,006.75
  5. Step 5: Solve for x
    x = 226,006.75/495.96
  6. Step 6: Final answer
    x = 455.70

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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.