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Finding the Fourth Proportional to 637.03, 955.30 and 198.15

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Solution

The fourth proportional to 637.03, 955.30 and 198.15 is: 297.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.03 : 955.30 = 198.15 : x
  2. Step 2: Convert to fraction form
    637.03/955.30 = 198.15/x
  3. Step 3: Cross multiply
    637.03x = 955.30 × 198.15
  4. Step 4: Simplify right side
    637.03x = 189,292.70
  5. Step 5: Solve for x
    x = 189,292.70/637.03
  6. Step 6: Final answer
    x = 297.15

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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.