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Finding the Fourth Proportional to 458.66, 632.79 and 272.09

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Solution

The fourth proportional to 458.66, 632.79 and 272.09 is: 375.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.66 : 632.79 = 272.09 : x
  2. Step 2: Convert to fraction form
    458.66/632.79 = 272.09/x
  3. Step 3: Cross multiply
    458.66x = 632.79 × 272.09
  4. Step 4: Simplify right side
    458.66x = 172,172.67
  5. Step 5: Solve for x
    x = 172,172.67/458.66
  6. Step 6: Final answer
    x = 375.39

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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.