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Finding the Fourth Proportional to 414.52, 621.96 and 277.60

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Solution

The fourth proportional to 414.52, 621.96 and 277.60 is: 416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.52 : 621.96 = 277.60 : x
  2. Step 2: Convert to fraction form
    414.52/621.96 = 277.60/x
  3. Step 3: Cross multiply
    414.52x = 621.96 × 277.60
  4. Step 4: Simplify right side
    414.52x = 172,656.10
  5. Step 5: Solve for x
    x = 172,656.10/414.52
  6. Step 6: Final answer
    x = 416.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.