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Finding the Fourth Proportional to 626.30, 875.20 and 626.30

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Solution

The fourth proportional to 626.30, 875.20 and 626.30 is: 875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.30 : 875.20 = 626.30 : x
  2. Step 2: Convert to fraction form
    626.30/875.20 = 626.30/x
  3. Step 3: Cross multiply
    626.30x = 875.20 × 626.30
  4. Step 4: Simplify right side
    626.30x = 548,137.76
  5. Step 5: Solve for x
    x = 548,137.76/626.30
  6. Step 6: Final answer
    x = 875.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.