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Finding the Fourth Proportional to 506.08, 698.39 and 285.03

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Solution

The fourth proportional to 506.08, 698.39 and 285.03 is: 393.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.08 : 698.39 = 285.03 : x
  2. Step 2: Convert to fraction form
    506.08/698.39 = 285.03/x
  3. Step 3: Cross multiply
    506.08x = 698.39 × 285.03
  4. Step 4: Simplify right side
    506.08x = 199,062.10
  5. Step 5: Solve for x
    x = 199,062.10/506.08
  6. Step 6: Final answer
    x = 393.34

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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.