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Finding the Fourth Proportional to 608.29, 912.32 and 218.28

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Solution

The fourth proportional to 608.29, 912.32 and 218.28 is: 327.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.29 : 912.32 = 218.28 : x
  2. Step 2: Convert to fraction form
    608.29/912.32 = 218.28/x
  3. Step 3: Cross multiply
    608.29x = 912.32 × 218.28
  4. Step 4: Simplify right side
    608.29x = 199,141.21
  5. Step 5: Solve for x
    x = 199,141.21/608.29
  6. Step 6: Final answer
    x = 327.38

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1.5x scale

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.