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Finding the Fourth Proportional to 1,262.43, 1,894.22 and 569.28

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Solution

The fourth proportional to 1,262.43, 1,894.22 and 569.28 is: 854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.43 : 1,894.22 = 569.28 : x
  2. Step 2: Convert to fraction form
    1,262.43/1,894.22 = 569.28/x
  3. Step 3: Cross multiply
    1,262.43x = 1,894.22 × 569.28
  4. Step 4: Simplify right side
    1,262.43x = 1,078,341.56
  5. Step 5: Solve for x
    x = 1,078,341.56/1,262.43
  6. Step 6: Final answer
    x = 854.18

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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.