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Finding the Fourth Proportional to 298.53, 447.80 and 103.52

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Solution

The fourth proportional to 298.53, 447.80 and 103.52 is: 155.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.53 : 447.80 = 103.52 : x
  2. Step 2: Convert to fraction form
    298.53/447.80 = 103.52/x
  3. Step 3: Cross multiply
    298.53x = 447.80 × 103.52
  4. Step 4: Simplify right side
    298.53x = 46,356.86
  5. Step 5: Solve for x
    x = 46,356.86/298.53
  6. Step 6: Final answer
    x = 155.28

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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.