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Finding the Fourth Proportional to 628.14, 866.54 and 366

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Solution

The fourth proportional to 628.14, 866.54 and 366 is: 504.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.14 : 866.54 = 366 : x
  2. Step 2: Convert to fraction form
    628.14/866.54 = 366/x
  3. Step 3: Cross multiply
    628.14x = 866.54 × 366
  4. Step 4: Simplify right side
    628.14x = 317,151.81
  5. Step 5: Solve for x
    x = 317,151.81/628.14
  6. Step 6: Final answer
    x = 504.91

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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.