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Finding the Fourth Proportional to 609.94, 915.39 and 353.62

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Solution

The fourth proportional to 609.94, 915.39 and 353.62 is: 530.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.94 : 915.39 = 353.62 : x
  2. Step 2: Convert to fraction form
    609.94/915.39 = 353.62/x
  3. Step 3: Cross multiply
    609.94x = 915.39 × 353.62
  4. Step 4: Simplify right side
    609.94x = 323,700.21
  5. Step 5: Solve for x
    x = 323,700.21/609.94
  6. Step 6: Final answer
    x = 530.71

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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.