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Finding the Fourth Proportional to 618.24, 928.43 and 548.99

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Solution

The fourth proportional to 618.24, 928.43 and 548.99 is: 824.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.24 : 928.43 = 548.99 : x
  2. Step 2: Convert to fraction form
    618.24/928.43 = 548.99/x
  3. Step 3: Cross multiply
    618.24x = 928.43 × 548.99
  4. Step 4: Simplify right side
    618.24x = 509,696.94
  5. Step 5: Solve for x
    x = 509,696.94/618.24
  6. Step 6: Final answer
    x = 824.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.