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Finding the Fourth Proportional to 548.51, 818.87 and 482.45

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Solution

The fourth proportional to 548.51, 818.87 and 482.45 is: 720.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.51 : 818.87 = 482.45 : x
  2. Step 2: Convert to fraction form
    548.51/818.87 = 482.45/x
  3. Step 3: Cross multiply
    548.51x = 818.87 × 482.45
  4. Step 4: Simplify right side
    548.51x = 395,057.32
  5. Step 5: Solve for x
    x = 395,057.32/548.51
  6. Step 6: Final answer
    x = 720.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.