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Finding the Fourth Proportional to 243.60, 364.80 and 182.40

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Solution

The fourth proportional to 243.60, 364.80 and 182.40 is: 273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.60 : 364.80 = 182.40 : x
  2. Step 2: Convert to fraction form
    243.60/364.80 = 182.40/x
  3. Step 3: Cross multiply
    243.60x = 364.80 × 182.40
  4. Step 4: Simplify right side
    243.60x = 66,539.52
  5. Step 5: Solve for x
    x = 66,539.52/243.60
  6. Step 6: Final answer
    x = 273.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.