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Finding the Fourth Proportional to 461.64, 637.03 and 251.81

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Solution

The fourth proportional to 461.64, 637.03 and 251.81 is: 347.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.64 : 637.03 = 251.81 : x
  2. Step 2: Convert to fraction form
    461.64/637.03 = 251.81/x
  3. Step 3: Cross multiply
    461.64x = 637.03 × 251.81
  4. Step 4: Simplify right side
    461.64x = 160,411.49
  5. Step 5: Solve for x
    x = 160,411.49/461.64
  6. Step 6: Final answer
    x = 347.48

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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.