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Finding the Fourth Proportional to 353.69, 487.48 and 304.37

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Solution

The fourth proportional to 353.69, 487.48 and 304.37 is: 419.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.69 : 487.48 = 304.37 : x
  2. Step 2: Convert to fraction form
    353.69/487.48 = 304.37/x
  3. Step 3: Cross multiply
    353.69x = 487.48 × 304.37
  4. Step 4: Simplify right side
    353.69x = 148,374.29
  5. Step 5: Solve for x
    x = 148,374.29/353.69
  6. Step 6: Final answer
    x = 419.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.