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Finding the Fourth Proportional to 506.08, 758.52 and 390.16

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Solution

The fourth proportional to 506.08, 758.52 and 390.16 is: 584.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.08 : 758.52 = 390.16 : x
  2. Step 2: Convert to fraction form
    506.08/758.52 = 390.16/x
  3. Step 3: Cross multiply
    506.08x = 758.52 × 390.16
  4. Step 4: Simplify right side
    506.08x = 295,944.16
  5. Step 5: Solve for x
    x = 295,944.16/506.08
  6. Step 6: Final answer
    x = 584.78

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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.