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Finding the Fourth Proportional to 443.70, 612.32 and 247.23

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Solution

The fourth proportional to 443.70, 612.32 and 247.23 is: 341.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.70 : 612.32 = 247.23 : x
  2. Step 2: Convert to fraction form
    443.70/612.32 = 247.23/x
  3. Step 3: Cross multiply
    443.70x = 612.32 × 247.23
  4. Step 4: Simplify right side
    443.70x = 151,382.64
  5. Step 5: Solve for x
    x = 151,382.64/443.70
  6. Step 6: Final answer
    x = 341.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.