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Finding the Fourth Proportional to 446.96, 666.79 and 426.32

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Solution

The fourth proportional to 446.96, 666.79 and 426.32 is: 636.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.96 : 666.79 = 426.32 : x
  2. Step 2: Convert to fraction form
    446.96/666.79 = 426.32/x
  3. Step 3: Cross multiply
    446.96x = 666.79 × 426.32
  4. Step 4: Simplify right side
    446.96x = 284,265.91
  5. Step 5: Solve for x
    x = 284,265.91/446.96
  6. Step 6: Final answer
    x = 636.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.