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Finding the Fourth Proportional to 444.11, 612.95 and 278.19

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Solution

The fourth proportional to 444.11, 612.95 and 278.19 is: 383.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.11 : 612.95 = 278.19 : x
  2. Step 2: Convert to fraction form
    444.11/612.95 = 278.19/x
  3. Step 3: Cross multiply
    444.11x = 612.95 × 278.19
  4. Step 4: Simplify right side
    444.11x = 170,515.17
  5. Step 5: Solve for x
    x = 170,515.17/444.11
  6. Step 6: Final answer
    x = 383.95

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Double scale
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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.