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Finding the Fourth Proportional to 446.96, 617.05 and 397.69

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Solution

The fourth proportional to 446.96, 617.05 and 397.69 is: 549.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.96 : 617.05 = 397.69 : x
  2. Step 2: Convert to fraction form
    446.96/617.05 = 397.69/x
  3. Step 3: Cross multiply
    446.96x = 617.05 × 397.69
  4. Step 4: Simplify right side
    446.96x = 245,394.61
  5. Step 5: Solve for x
    x = 245,394.61/446.96
  6. Step 6: Final answer
    x = 549.03

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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.