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Finding the Fourth Proportional to 637.51, 955.98 and 198.65

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Solution

The fourth proportional to 637.51, 955.98 and 198.65 is: 297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.51 : 955.98 = 198.65 : x
  2. Step 2: Convert to fraction form
    637.51/955.98 = 198.65/x
  3. Step 3: Cross multiply
    637.51x = 955.98 × 198.65
  4. Step 4: Simplify right side
    637.51x = 189,905.43
  5. Step 5: Solve for x
    x = 189,905.43/637.51
  6. Step 6: Final answer
    x = 297.89

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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.