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Finding the Fourth Proportional to 458.77, 633.09 and 272.22

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Solution

The fourth proportional to 458.77, 633.09 and 272.22 is: 375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.77 : 633.09 = 272.22 : x
  2. Step 2: Convert to fraction form
    458.77/633.09 = 272.22/x
  3. Step 3: Cross multiply
    458.77x = 633.09 × 272.22
  4. Step 4: Simplify right side
    458.77x = 172,339.42
  5. Step 5: Solve for x
    x = 172,339.42/458.77
  6. Step 6: Final answer
    x = 375.65

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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.