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Finding the Fourth Proportional to 399.92, 551.74 and 269.01

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Solution

The fourth proportional to 399.92, 551.74 and 269.01 is: 371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.92 : 551.74 = 269.01 : x
  2. Step 2: Convert to fraction form
    399.92/551.74 = 269.01/x
  3. Step 3: Cross multiply
    399.92x = 551.74 × 269.01
  4. Step 4: Simplify right side
    399.92x = 148,424.28
  5. Step 5: Solve for x
    x = 148,424.28/399.92
  6. Step 6: Final answer
    x = 371.14

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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.