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Finding the Fourth Proportional to 637.23, 955.74 and 220.83

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Solution

The fourth proportional to 637.23, 955.74 and 220.83 is: 331.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.23 : 955.74 = 220.83 : x
  2. Step 2: Convert to fraction form
    637.23/955.74 = 220.83/x
  3. Step 3: Cross multiply
    637.23x = 955.74 × 220.83
  4. Step 4: Simplify right side
    637.23x = 211,056.06
  5. Step 5: Solve for x
    x = 211,056.06/637.23
  6. Step 6: Final answer
    x = 331.21

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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.