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Finding the Fourth Proportional to 444.15, 612.77 and 278.37

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Solution

The fourth proportional to 444.15, 612.77 and 278.37 is: 384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.15 : 612.77 = 278.37 : x
  2. Step 2: Convert to fraction form
    444.15/612.77 = 278.37/x
  3. Step 3: Cross multiply
    444.15x = 612.77 × 278.37
  4. Step 4: Simplify right side
    444.15x = 170,575.39
  5. Step 5: Solve for x
    x = 170,575.39/444.15
  6. Step 6: Final answer
    x = 384.05

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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.