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Finding the Fourth Proportional to 620.06, 930.13 and 499.01

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Solution

The fourth proportional to 620.06, 930.13 and 499.01 is: 748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.06 : 930.13 = 499.01 : x
  2. Step 2: Convert to fraction form
    620.06/930.13 = 499.01/x
  3. Step 3: Cross multiply
    620.06x = 930.13 × 499.01
  4. Step 4: Simplify right side
    620.06x = 464,138.27
  5. Step 5: Solve for x
    x = 464,138.27/620.06
  6. Step 6: Final answer
    x = 748.54

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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.