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Finding the Fourth Proportional to 461.77, 693.66 and 279.27

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Solution

The fourth proportional to 461.77, 693.66 and 279.27 is: 419.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.77 : 693.66 = 279.27 : x
  2. Step 2: Convert to fraction form
    461.77/693.66 = 279.27/x
  3. Step 3: Cross multiply
    461.77x = 693.66 × 279.27
  4. Step 4: Simplify right side
    461.77x = 193,718.43
  5. Step 5: Solve for x
    x = 193,718.43/461.77
  6. Step 6: Final answer
    x = 419.51

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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.