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Finding the Fourth Proportional to 626.07, 863.95 and 346.30

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Solution

The fourth proportional to 626.07, 863.95 and 346.30 is: 477.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.07 : 863.95 = 346.30 : x
  2. Step 2: Convert to fraction form
    626.07/863.95 = 346.30/x
  3. Step 3: Cross multiply
    626.07x = 863.95 × 346.30
  4. Step 4: Simplify right side
    626.07x = 299,187.40
  5. Step 5: Solve for x
    x = 299,187.40/626.07
  6. Step 6: Final answer
    x = 477.88

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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.