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Finding the Fourth Proportional to 458.78, 633.13 and 262.28

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Solution

The fourth proportional to 458.78, 633.13 and 262.28 is: 361.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.78 : 633.13 = 262.28 : x
  2. Step 2: Convert to fraction form
    458.78/633.13 = 262.28/x
  3. Step 3: Cross multiply
    458.78x = 633.13 × 262.28
  4. Step 4: Simplify right side
    458.78x = 166,058.26
  5. Step 5: Solve for x
    x = 166,058.26/458.78
  6. Step 6: Final answer
    x = 361.96

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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.