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Finding the Fourth Proportional to 637.20, 955.70 and 247.10

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Solution

The fourth proportional to 637.20, 955.70 and 247.10 is: 370.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.20 : 955.70 = 247.10 : x
  2. Step 2: Convert to fraction form
    637.20/955.70 = 247.10/x
  3. Step 3: Cross multiply
    637.20x = 955.70 × 247.10
  4. Step 4: Simplify right side
    637.20x = 236,153.47
  5. Step 5: Solve for x
    x = 236,153.47/637.20
  6. Step 6: Final answer
    x = 370.61

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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.