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Finding the Fourth Proportional to 299.01, 412.82 and 188.66

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Solution

The fourth proportional to 299.01, 412.82 and 188.66 is: 260.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.01 : 412.82 = 188.66 : x
  2. Step 2: Convert to fraction form
    299.01/412.82 = 188.66/x
  3. Step 3: Cross multiply
    299.01x = 412.82 × 188.66
  4. Step 4: Simplify right side
    299.01x = 77,879.61
  5. Step 5: Solve for x
    x = 77,879.61/299.01
  6. Step 6: Final answer
    x = 260.46

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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.