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Finding the Fourth Proportional to 458.97, 687.42 and 336.93

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Solution

The fourth proportional to 458.97, 687.42 and 336.93 is: 504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.97 : 687.42 = 336.93 : x
  2. Step 2: Convert to fraction form
    458.97/687.42 = 336.93/x
  3. Step 3: Cross multiply
    458.97x = 687.42 × 336.93
  4. Step 4: Simplify right side
    458.97x = 231,612.42
  5. Step 5: Solve for x
    x = 231,612.42/458.97
  6. Step 6: Final answer
    x = 504.64

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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.