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Finding the Fourth Proportional to 298.94, 448.55 and 116.40

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Solution

The fourth proportional to 298.94, 448.55 and 116.40 is: 174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.94 : 448.55 = 116.40 : x
  2. Step 2: Convert to fraction form
    298.94/448.55 = 116.40/x
  3. Step 3: Cross multiply
    298.94x = 448.55 × 116.40
  4. Step 4: Simplify right side
    298.94x = 52,211.22
  5. Step 5: Solve for x
    x = 52,211.22/298.94
  6. Step 6: Final answer
    x = 174.65

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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.