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Finding the Fourth Proportional to 444.22, 612.62 and 278.45

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Solution

The fourth proportional to 444.22, 612.62 and 278.45 is: 384.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.22 : 612.62 = 278.45 : x
  2. Step 2: Convert to fraction form
    444.22/612.62 = 278.45/x
  3. Step 3: Cross multiply
    444.22x = 612.62 × 278.45
  4. Step 4: Simplify right side
    444.22x = 170,580.28
  5. Step 5: Solve for x
    x = 170,580.28/444.22
  6. Step 6: Final answer
    x = 384.00

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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.