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Finding the Fourth Proportional to 447.54, 669.48 and 356.42

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Solution

The fourth proportional to 447.54, 669.48 and 356.42 is: 533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.54 : 669.48 = 356.42 : x
  2. Step 2: Convert to fraction form
    447.54/669.48 = 356.42/x
  3. Step 3: Cross multiply
    447.54x = 669.48 × 356.42
  4. Step 4: Simplify right side
    447.54x = 238,616.06
  5. Step 5: Solve for x
    x = 238,616.06/447.54
  6. Step 6: Final answer
    x = 533.17

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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.