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Finding the Fourth Proportional to 446.42, 616.26 and 328.40

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Solution

The fourth proportional to 446.42, 616.26 and 328.40 is: 453.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.42 : 616.26 = 328.40 : x
  2. Step 2: Convert to fraction form
    446.42/616.26 = 328.40/x
  3. Step 3: Cross multiply
    446.42x = 616.26 × 328.40
  4. Step 4: Simplify right side
    446.42x = 202,380.25
  5. Step 5: Solve for x
    x = 202,380.25/446.42
  6. Step 6: Final answer
    x = 453.34

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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.