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Finding the Fourth Proportional to 1,378.33, 2,066.22 and 500.63

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Solution

The fourth proportional to 1,378.33, 2,066.22 and 500.63 is: 750.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.33 : 2,066.22 = 500.63 : x
  2. Step 2: Convert to fraction form
    1,378.33/2,066.22 = 500.63/x
  3. Step 3: Cross multiply
    1,378.33x = 2,066.22 × 500.63
  4. Step 4: Simplify right side
    1,378.33x = 1,034,401.39
  5. Step 5: Solve for x
    x = 1,034,401.39/1,378.33
  6. Step 6: Final answer
    x = 750.48

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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.