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Finding the Fourth Proportional to 304.06, 455.28 and 243.40

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Solution

The fourth proportional to 304.06, 455.28 and 243.40 is: 364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.06 : 455.28 = 243.40 : x
  2. Step 2: Convert to fraction form
    304.06/455.28 = 243.40/x
  3. Step 3: Cross multiply
    304.06x = 455.28 × 243.40
  4. Step 4: Simplify right side
    304.06x = 110,815.15
  5. Step 5: Solve for x
    x = 110,815.15/304.06
  6. Step 6: Final answer
    x = 364.45

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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.