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Finding the Fourth Proportional to 506.22, 698.48 and 307

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Solution

The fourth proportional to 506.22, 698.48 and 307 is: 423.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.22 : 698.48 = 307 : x
  2. Step 2: Convert to fraction form
    506.22/698.48 = 307/x
  3. Step 3: Cross multiply
    506.22x = 698.48 × 307
  4. Step 4: Simplify right side
    506.22x = 214,433.36
  5. Step 5: Solve for x
    x = 214,433.36/506.22
  6. Step 6: Final answer
    x = 423.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.