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Finding the Fourth Proportional to 340.09, 469.29 and 192.70

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Solution

The fourth proportional to 340.09, 469.29 and 192.70 is: 265.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.09 : 469.29 = 192.70 : x
  2. Step 2: Convert to fraction form
    340.09/469.29 = 192.70/x
  3. Step 3: Cross multiply
    340.09x = 469.29 × 192.70
  4. Step 4: Simplify right side
    340.09x = 90,432.18
  5. Step 5: Solve for x
    x = 90,432.18/340.09
  6. Step 6: Final answer
    x = 265.91

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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.