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Finding the Fourth Proportional to 304.24, 420.03 and 193.81

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Solution

The fourth proportional to 304.24, 420.03 and 193.81 is: 267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.24 : 420.03 = 193.81 : x
  2. Step 2: Convert to fraction form
    304.24/420.03 = 193.81/x
  3. Step 3: Cross multiply
    304.24x = 420.03 × 193.81
  4. Step 4: Simplify right side
    304.24x = 81,402.95
  5. Step 5: Solve for x
    x = 81,402.95/304.24
  6. Step 6: Final answer
    x = 267.57

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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.