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Finding the Fourth Proportional to 822.07, 1,233.12 and 334.78

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Solution

The fourth proportional to 822.07, 1,233.12 and 334.78 is: 502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    822.07 : 1,233.12 = 334.78 : x
  2. Step 2: Convert to fraction form
    822.07/1,233.12 = 334.78/x
  3. Step 3: Cross multiply
    822.07x = 1,233.12 × 334.78
  4. Step 4: Simplify right side
    822.07x = 412,816.07
  5. Step 5: Solve for x
    x = 412,816.07/822.07
  6. Step 6: Final answer
    x = 502.17

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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.