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Finding the Fourth Proportional to 243.36, 366.48 and 203.04

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Solution

The fourth proportional to 243.36, 366.48 and 203.04 is: 305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.36 : 366.48 = 203.04 : x
  2. Step 2: Convert to fraction form
    243.36/366.48 = 203.04/x
  3. Step 3: Cross multiply
    243.36x = 366.48 × 203.04
  4. Step 4: Simplify right side
    243.36x = 74,410.10
  5. Step 5: Solve for x
    x = 74,410.10/243.36
  6. Step 6: Final answer
    x = 305.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.