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Finding the Fourth Proportional to 627.99, 866.63 and 348.23

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Solution

The fourth proportional to 627.99, 866.63 and 348.23 is: 480.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.99 : 866.63 = 348.23 : x
  2. Step 2: Convert to fraction form
    627.99/866.63 = 348.23/x
  3. Step 3: Cross multiply
    627.99x = 866.63 × 348.23
  4. Step 4: Simplify right side
    627.99x = 301,780.49
  5. Step 5: Solve for x
    x = 301,780.49/627.99
  6. Step 6: Final answer
    x = 480.55

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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.