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Finding the Fourth Proportional to 612.33, 918.31 and 222.28

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Solution

The fourth proportional to 612.33, 918.31 and 222.28 is: 333.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.33 : 918.31 = 222.28 : x
  2. Step 2: Convert to fraction form
    612.33/918.31 = 222.28/x
  3. Step 3: Cross multiply
    612.33x = 918.31 × 222.28
  4. Step 4: Simplify right side
    612.33x = 204,121.95
  5. Step 5: Solve for x
    x = 204,121.95/612.33
  6. Step 6: Final answer
    x = 333.35

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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.