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Finding the Fourth Proportional to 298.95, 448.71 and 144.96

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Solution

The fourth proportional to 298.95, 448.71 and 144.96 is: 217.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.95 : 448.71 = 144.96 : x
  2. Step 2: Convert to fraction form
    298.95/448.71 = 144.96/x
  3. Step 3: Cross multiply
    298.95x = 448.71 × 144.96
  4. Step 4: Simplify right side
    298.95x = 65,045.00
  5. Step 5: Solve for x
    x = 65,045.00/298.95
  6. Step 6: Final answer
    x = 217.58

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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.