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Finding the Fourth Proportional to 388.44, 579.27 and 366.87

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Solution

The fourth proportional to 388.44, 579.27 and 366.87 is: 547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.44 : 579.27 = 366.87 : x
  2. Step 2: Convert to fraction form
    388.44/579.27 = 366.87/x
  3. Step 3: Cross multiply
    388.44x = 579.27 × 366.87
  4. Step 4: Simplify right side
    388.44x = 212,516.78
  5. Step 5: Solve for x
    x = 212,516.78/388.44
  6. Step 6: Final answer
    x = 547.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.