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Finding the Fourth Proportional to 824.24, 1,137.24 and 548.24

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Solution

The fourth proportional to 824.24, 1,137.24 and 548.24 is: 756.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    824.24 : 1,137.24 = 548.24 : x
  2. Step 2: Convert to fraction form
    824.24/1,137.24 = 548.24/x
  3. Step 3: Cross multiply
    824.24x = 1,137.24 × 548.24
  4. Step 4: Simplify right side
    824.24x = 623,480.46
  5. Step 5: Solve for x
    x = 623,480.46/824.24
  6. Step 6: Final answer
    x = 756.43

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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.