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Finding the Fourth Proportional to 1,446.54, 2,168.70 and 509.22

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Solution

The fourth proportional to 1,446.54, 2,168.70 and 509.22 is: 763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.54 : 2,168.70 = 509.22 : x
  2. Step 2: Convert to fraction form
    1,446.54/2,168.70 = 509.22/x
  3. Step 3: Cross multiply
    1,446.54x = 2,168.70 × 509.22
  4. Step 4: Simplify right side
    1,446.54x = 1,104,345.41
  5. Step 5: Solve for x
    x = 1,104,345.41/1,446.54
  6. Step 6: Final answer
    x = 763.44

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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.