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Finding the Fourth Proportional to 303.17, 418.21 and 192.45

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Solution

The fourth proportional to 303.17, 418.21 and 192.45 is: 265.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.17 : 418.21 = 192.45 : x
  2. Step 2: Convert to fraction form
    303.17/418.21 = 192.45/x
  3. Step 3: Cross multiply
    303.17x = 418.21 × 192.45
  4. Step 4: Simplify right side
    303.17x = 80,484.51
  5. Step 5: Solve for x
    x = 80,484.51/303.17
  6. Step 6: Final answer
    x = 265.48

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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.