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Finding the Fourth Proportional to 548.87, 756.18 and 451.25

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Solution

The fourth proportional to 548.87, 756.18 and 451.25 is: 621.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.87 : 756.18 = 451.25 : x
  2. Step 2: Convert to fraction form
    548.87/756.18 = 451.25/x
  3. Step 3: Cross multiply
    548.87x = 756.18 × 451.25
  4. Step 4: Simplify right side
    548.87x = 341,226.23
  5. Step 5: Solve for x
    x = 341,226.23/548.87
  6. Step 6: Final answer
    x = 621.69

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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.