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Finding the Fourth Proportional to 620.09, 929.43 and 498.44

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Solution

The fourth proportional to 620.09, 929.43 and 498.44 is: 747.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.09 : 929.43 = 498.44 : x
  2. Step 2: Convert to fraction form
    620.09/929.43 = 498.44/x
  3. Step 3: Cross multiply
    620.09x = 929.43 × 498.44
  4. Step 4: Simplify right side
    620.09x = 463,260.44
  5. Step 5: Solve for x
    x = 463,260.44/620.09
  6. Step 6: Final answer
    x = 747.09

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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.