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Finding the Fourth Proportional to 440.84, 662.18 and 416.34

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Solution

The fourth proportional to 440.84, 662.18 and 416.34 is: 625.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.84 : 662.18 = 416.34 : x
  2. Step 2: Convert to fraction form
    440.84/662.18 = 416.34/x
  3. Step 3: Cross multiply
    440.84x = 662.18 × 416.34
  4. Step 4: Simplify right side
    440.84x = 275,689.94
  5. Step 5: Solve for x
    x = 275,689.94/440.84
  6. Step 6: Final answer
    x = 625.37

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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.