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Finding the Fourth Proportional to 446.67, 616.50 and 322.74

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Solution

The fourth proportional to 446.67, 616.50 and 322.74 is: 445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.67 : 616.50 = 322.74 : x
  2. Step 2: Convert to fraction form
    446.67/616.50 = 322.74/x
  3. Step 3: Cross multiply
    446.67x = 616.50 × 322.74
  4. Step 4: Simplify right side
    446.67x = 198,969.21
  5. Step 5: Solve for x
    x = 198,969.21/446.67
  6. Step 6: Final answer
    x = 445.45

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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.