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Finding the Fourth Proportional to 506.96, 699.63 and 285.92

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Solution

The fourth proportional to 506.96, 699.63 and 285.92 is: 394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.96 : 699.63 = 285.92 : x
  2. Step 2: Convert to fraction form
    506.96/699.63 = 285.92/x
  3. Step 3: Cross multiply
    506.96x = 699.63 × 285.92
  4. Step 4: Simplify right side
    506.96x = 200,038.21
  5. Step 5: Solve for x
    x = 200,038.21/506.96
  6. Step 6: Final answer
    x = 394.58

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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.