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Finding the Fourth Proportional to 628.20, 866.95 and 362.69

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Solution

The fourth proportional to 628.20, 866.95 and 362.69 is: 500.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.20 : 866.95 = 362.69 : x
  2. Step 2: Convert to fraction form
    628.20/866.95 = 362.69/x
  3. Step 3: Cross multiply
    628.20x = 866.95 × 362.69
  4. Step 4: Simplify right side
    628.20x = 314,433.73
  5. Step 5: Solve for x
    x = 314,433.73/628.20
  6. Step 6: Final answer
    x = 500.53

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1.5x scale

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.