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Finding the Fourth Proportional to 340.29, 469.49 and 192.90

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Solution

The fourth proportional to 340.29, 469.49 and 192.90 is: 266.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.29 : 469.49 = 192.90 : x
  2. Step 2: Convert to fraction form
    340.29/469.49 = 192.90/x
  3. Step 3: Cross multiply
    340.29x = 469.49 × 192.90
  4. Step 4: Simplify right side
    340.29x = 90,564.62
  5. Step 5: Solve for x
    x = 90,564.62/340.29
  6. Step 6: Final answer
    x = 266.14

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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.