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Finding the Fourth Proportional to 445.90, 615.18 and 277.84

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Solution

The fourth proportional to 445.90, 615.18 and 277.84 is: 383.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.90 : 615.18 = 277.84 : x
  2. Step 2: Convert to fraction form
    445.90/615.18 = 277.84/x
  3. Step 3: Cross multiply
    445.90x = 615.18 × 277.84
  4. Step 4: Simplify right side
    445.90x = 170,921.61
  5. Step 5: Solve for x
    x = 170,921.61/445.90
  6. Step 6: Final answer
    x = 383.32

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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.