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Finding the Fourth Proportional to 299.06, 412.59 and 188.34

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Solution

The fourth proportional to 299.06, 412.59 and 188.34 is: 259.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.06 : 412.59 = 188.34 : x
  2. Step 2: Convert to fraction form
    299.06/412.59 = 188.34/x
  3. Step 3: Cross multiply
    299.06x = 412.59 × 188.34
  4. Step 4: Simplify right side
    299.06x = 77,707.20
  5. Step 5: Solve for x
    x = 77,707.20/299.06
  6. Step 6: Final answer
    x = 259.84

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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.