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Finding the Fourth Proportional to 627.93, 867.05 and 407.25

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Solution

The fourth proportional to 627.93, 867.05 and 407.25 is: 562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.93 : 867.05 = 407.25 : x
  2. Step 2: Convert to fraction form
    627.93/867.05 = 407.25/x
  3. Step 3: Cross multiply
    627.93x = 867.05 × 407.25
  4. Step 4: Simplify right side
    627.93x = 353,110.33
  5. Step 5: Solve for x
    x = 353,110.33/627.93
  6. Step 6: Final answer
    x = 562.34

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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.