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Finding the Fourth Proportional to 415.03, 621.67 and 350.68

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Solution

The fourth proportional to 415.03, 621.67 and 350.68 is: 525.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.03 : 621.67 = 350.68 : x
  2. Step 2: Convert to fraction form
    415.03/621.67 = 350.68/x
  3. Step 3: Cross multiply
    415.03x = 621.67 × 350.68
  4. Step 4: Simplify right side
    415.03x = 218,007.24
  5. Step 5: Solve for x
    x = 218,007.24/415.03
  6. Step 6: Final answer
    x = 525.28

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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.