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Finding the Fourth Proportional to 590.36, 885.20 and 243.68

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Solution

The fourth proportional to 590.36, 885.20 and 243.68 is: 365.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.36 : 885.20 = 243.68 : x
  2. Step 2: Convert to fraction form
    590.36/885.20 = 243.68/x
  3. Step 3: Cross multiply
    590.36x = 885.20 × 243.68
  4. Step 4: Simplify right side
    590.36x = 215,705.54
  5. Step 5: Solve for x
    x = 215,705.54/590.36
  6. Step 6: Final answer
    x = 365.38

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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.