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Finding the Fourth Proportional to 452.47, 625.89 and 378.66

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Solution

The fourth proportional to 452.47, 625.89 and 378.66 is: 523.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.47 : 625.89 = 378.66 : x
  2. Step 2: Convert to fraction form
    452.47/625.89 = 378.66/x
  3. Step 3: Cross multiply
    452.47x = 625.89 × 378.66
  4. Step 4: Simplify right side
    452.47x = 236,999.51
  5. Step 5: Solve for x
    x = 236,999.51/452.47
  6. Step 6: Final answer
    x = 523.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.