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Finding the Fourth Proportional to 286.60, 430.23 and 243.13

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Solution

The fourth proportional to 286.60, 430.23 and 243.13 is: 364.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.60 : 430.23 = 243.13 : x
  2. Step 2: Convert to fraction form
    286.60/430.23 = 243.13/x
  3. Step 3: Cross multiply
    286.60x = 430.23 × 243.13
  4. Step 4: Simplify right side
    286.60x = 104,601.82
  5. Step 5: Solve for x
    x = 104,601.82/286.60
  6. Step 6: Final answer
    x = 364.97

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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.