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Finding the Fourth Proportional to 452.63, 625.07 and 386.75

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Solution

The fourth proportional to 452.63, 625.07 and 386.75 is: 534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.63 : 625.07 = 386.75 : x
  2. Step 2: Convert to fraction form
    452.63/625.07 = 386.75/x
  3. Step 3: Cross multiply
    452.63x = 625.07 × 386.75
  4. Step 4: Simplify right side
    452.63x = 241,745.82
  5. Step 5: Solve for x
    x = 241,745.82/452.63
  6. Step 6: Final answer
    x = 534.09

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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.