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Finding the Fourth Proportional to 626.15, 939.90 and 352.51

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Solution

The fourth proportional to 626.15, 939.90 and 352.51 is: 529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.15 : 939.90 = 352.51 : x
  2. Step 2: Convert to fraction form
    626.15/939.90 = 352.51/x
  3. Step 3: Cross multiply
    626.15x = 939.90 × 352.51
  4. Step 4: Simplify right side
    626.15x = 331,324.15
  5. Step 5: Solve for x
    x = 331,324.15/626.15
  6. Step 6: Final answer
    x = 529.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.