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Finding the Fourth Proportional to 461.61, 637.18 and 275.16

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Solution

The fourth proportional to 461.61, 637.18 and 275.16 is: 379.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.61 : 637.18 = 275.16 : x
  2. Step 2: Convert to fraction form
    461.61/637.18 = 275.16/x
  3. Step 3: Cross multiply
    461.61x = 637.18 × 275.16
  4. Step 4: Simplify right side
    461.61x = 175,324.57
  5. Step 5: Solve for x
    x = 175,324.57/461.61
  6. Step 6: Final answer
    x = 379.81

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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.