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Finding the Fourth Proportional to 609.62, 915.03 and 414.63

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Solution

The fourth proportional to 609.62, 915.03 and 414.63 is: 622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.62 : 915.03 = 414.63 : x
  2. Step 2: Convert to fraction form
    609.62/915.03 = 414.63/x
  3. Step 3: Cross multiply
    609.62x = 915.03 × 414.63
  4. Step 4: Simplify right side
    609.62x = 379,398.89
  5. Step 5: Solve for x
    x = 379,398.89/609.62
  6. Step 6: Final answer
    x = 622.36

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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.