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Finding the Fourth Proportional to 461.85, 637.36 and 275.45

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Solution

The fourth proportional to 461.85, 637.36 and 275.45 is: 380.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.85 : 637.36 = 275.45 : x
  2. Step 2: Convert to fraction form
    461.85/637.36 = 275.45/x
  3. Step 3: Cross multiply
    461.85x = 637.36 × 275.45
  4. Step 4: Simplify right side
    461.85x = 175,556.94
  5. Step 5: Solve for x
    x = 175,556.94/461.85
  6. Step 6: Final answer
    x = 380.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.