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Finding the Fourth Proportional to 637.36, 955.68 and 220.77

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Solution

The fourth proportional to 637.36, 955.68 and 220.77 is: 331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.36 : 955.68 = 220.77 : x
  2. Step 2: Convert to fraction form
    637.36/955.68 = 220.77/x
  3. Step 3: Cross multiply
    637.36x = 955.68 × 220.77
  4. Step 4: Simplify right side
    637.36x = 210,982.72
  5. Step 5: Solve for x
    x = 210,982.72/637.36
  6. Step 6: Final answer
    x = 331.03

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1.5x scale

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.