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Finding the Fourth Proportional to 1,553.94, 2,331.32 and 458.33

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Solution

The fourth proportional to 1,553.94, 2,331.32 and 458.33 is: 687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.94 : 2,331.32 = 458.33 : x
  2. Step 2: Convert to fraction form
    1,553.94/2,331.32 = 458.33/x
  3. Step 3: Cross multiply
    1,553.94x = 2,331.32 × 458.33
  4. Step 4: Simplify right side
    1,553.94x = 1,068,499.95
  5. Step 5: Solve for x
    x = 1,068,499.95/1,553.94
  6. Step 6: Final answer
    x = 687.61

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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.