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Finding the Fourth Proportional to 449.08, 676.72 and 369.72

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Solution

The fourth proportional to 449.08, 676.72 and 369.72 is: 557.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.08 : 676.72 = 369.72 : x
  2. Step 2: Convert to fraction form
    449.08/676.72 = 369.72/x
  3. Step 3: Cross multiply
    449.08x = 676.72 × 369.72
  4. Step 4: Simplify right side
    449.08x = 250,196.92
  5. Step 5: Solve for x
    x = 250,196.92/449.08
  6. Step 6: Final answer
    x = 557.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.