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Finding the Fourth Proportional to 608.52, 911.60 and 319.26

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Solution

The fourth proportional to 608.52, 911.60 and 319.26 is: 478.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.52 : 911.60 = 319.26 : x
  2. Step 2: Convert to fraction form
    608.52/911.60 = 319.26/x
  3. Step 3: Cross multiply
    608.52x = 911.60 × 319.26
  4. Step 4: Simplify right side
    608.52x = 291,037.42
  5. Step 5: Solve for x
    x = 291,037.42/608.52
  6. Step 6: Final answer
    x = 478.27

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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.