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Finding the Fourth Proportional to 609.80, 915.50 and 336.02

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Solution

The fourth proportional to 609.80, 915.50 and 336.02 is: 504.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.80 : 915.50 = 336.02 : x
  2. Step 2: Convert to fraction form
    609.80/915.50 = 336.02/x
  3. Step 3: Cross multiply
    609.80x = 915.50 × 336.02
  4. Step 4: Simplify right side
    609.80x = 307,622.57
  5. Step 5: Solve for x
    x = 307,622.57/609.80
  6. Step 6: Final answer
    x = 504.47

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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.