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Finding the Fourth Proportional to 446.36, 616.62 and 353.72

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Solution

The fourth proportional to 446.36, 616.62 and 353.72 is: 488.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.36 : 616.62 = 353.72 : x
  2. Step 2: Convert to fraction form
    446.36/616.62 = 353.72/x
  3. Step 3: Cross multiply
    446.36x = 616.62 × 353.72
  4. Step 4: Simplify right side
    446.36x = 218,110.83
  5. Step 5: Solve for x
    x = 218,110.83/446.36
  6. Step 6: Final answer
    x = 488.64

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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.