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Finding the Fourth Proportional to 298.61, 447.77 and 93.18

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Solution

The fourth proportional to 298.61, 447.77 and 93.18 is: 139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.61 : 447.77 = 93.18 : x
  2. Step 2: Convert to fraction form
    298.61/447.77 = 93.18/x
  3. Step 3: Cross multiply
    298.61x = 447.77 × 93.18
  4. Step 4: Simplify right side
    298.61x = 41,723.21
  5. Step 5: Solve for x
    x = 41,723.21/298.61
  6. Step 6: Final answer
    x = 139.72

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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.