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Finding the Fourth Proportional to 444.55, 613.22 and 278.47

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Solution

The fourth proportional to 444.55, 613.22 and 278.47 is: 384.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.55 : 613.22 = 278.47 : x
  2. Step 2: Convert to fraction form
    444.55/613.22 = 278.47/x
  3. Step 3: Cross multiply
    444.55x = 613.22 × 278.47
  4. Step 4: Simplify right side
    444.55x = 170,760.45
  5. Step 5: Solve for x
    x = 170,760.45/444.55
  6. Step 6: Final answer
    x = 384.12

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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.