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Finding the Fourth Proportional to 628.24, 866.79 and 366.22

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Solution

The fourth proportional to 628.24, 866.79 and 366.22 is: 505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.24 : 866.79 = 366.22 : x
  2. Step 2: Convert to fraction form
    628.24/866.79 = 366.22/x
  3. Step 3: Cross multiply
    628.24x = 866.79 × 366.22
  4. Step 4: Simplify right side
    628.24x = 317,435.83
  5. Step 5: Solve for x
    x = 317,435.83/628.24
  6. Step 6: Final answer
    x = 505.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.