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Finding the Fourth Proportional to 298.90, 412.53 and 188.29

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Solution

The fourth proportional to 298.90, 412.53 and 188.29 is: 259.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.90 : 412.53 = 188.29 : x
  2. Step 2: Convert to fraction form
    298.90/412.53 = 188.29/x
  3. Step 3: Cross multiply
    298.90x = 412.53 × 188.29
  4. Step 4: Simplify right side
    298.90x = 77,675.27
  5. Step 5: Solve for x
    x = 77,675.27/298.90
  6. Step 6: Final answer
    x = 259.87

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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.