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Finding the Fourth Proportional to 298.72, 448.02 and 136.37

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Solution

The fourth proportional to 298.72, 448.02 and 136.37 is: 204.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.72 : 448.02 = 136.37 : x
  2. Step 2: Convert to fraction form
    298.72/448.02 = 136.37/x
  3. Step 3: Cross multiply
    298.72x = 448.02 × 136.37
  4. Step 4: Simplify right side
    298.72x = 61,094.25
  5. Step 5: Solve for x
    x = 61,094.25/298.72
  6. Step 6: Final answer
    x = 204.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.