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Finding the Fourth Proportional to 490.96, 736.32 and 317.49

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Solution

The fourth proportional to 490.96, 736.32 and 317.49 is: 476.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.96 : 736.32 = 317.49 : x
  2. Step 2: Convert to fraction form
    490.96/736.32 = 317.49/x
  3. Step 3: Cross multiply
    490.96x = 736.32 × 317.49
  4. Step 4: Simplify right side
    490.96x = 233,776.20
  5. Step 5: Solve for x
    x = 233,776.20/490.96
  6. Step 6: Final answer
    x = 476.16

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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.