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Finding the Fourth Proportional to 626.02, 864.98 and 515.41

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Solution

The fourth proportional to 626.02, 864.98 and 515.41 is: 712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.02 : 864.98 = 515.41 : x
  2. Step 2: Convert to fraction form
    626.02/864.98 = 515.41/x
  3. Step 3: Cross multiply
    626.02x = 864.98 × 515.41
  4. Step 4: Simplify right side
    626.02x = 445,819.34
  5. Step 5: Solve for x
    x = 445,819.34/626.02
  6. Step 6: Final answer
    x = 712.15

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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.