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Finding the Fourth Proportional to 315.39, 435.20 and 184.44

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Solution

The fourth proportional to 315.39, 435.20 and 184.44 is: 254.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.39 : 435.20 = 184.44 : x
  2. Step 2: Convert to fraction form
    315.39/435.20 = 184.44/x
  3. Step 3: Cross multiply
    315.39x = 435.20 × 184.44
  4. Step 4: Simplify right side
    315.39x = 80,267.37
  5. Step 5: Solve for x
    x = 80,267.37/315.39
  6. Step 6: Final answer
    x = 254.50

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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.