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Finding the Fourth Proportional to 444.45, 612.18 and 442.02

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Solution

The fourth proportional to 444.45, 612.18 and 442.02 is: 608.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.45 : 612.18 = 442.02 : x
  2. Step 2: Convert to fraction form
    444.45/612.18 = 442.02/x
  3. Step 3: Cross multiply
    444.45x = 612.18 × 442.02
  4. Step 4: Simplify right side
    444.45x = 270,595.80
  5. Step 5: Solve for x
    x = 270,595.80/444.45
  6. Step 6: Final answer
    x = 608.83

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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.