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Finding the Fourth Proportional to 618.37, 928.62 and 549.12

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Solution

The fourth proportional to 618.37, 928.62 and 549.12 is: 824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.37 : 928.62 = 549.12 : x
  2. Step 2: Convert to fraction form
    618.37/928.62 = 549.12/x
  3. Step 3: Cross multiply
    618.37x = 928.62 × 549.12
  4. Step 4: Simplify right side
    618.37x = 509,916.43
  5. Step 5: Solve for x
    x = 509,916.43/618.37
  6. Step 6: Final answer
    x = 824.61

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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.