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Finding the Fourth Proportional to 1,348.09, 2,022.47 and 557.28

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Solution

The fourth proportional to 1,348.09, 2,022.47 and 557.28 is: 836.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348.09 : 2,022.47 = 557.28 : x
  2. Step 2: Convert to fraction form
    1,348.09/2,022.47 = 557.28/x
  3. Step 3: Cross multiply
    1,348.09x = 2,022.47 × 557.28
  4. Step 4: Simplify right side
    1,348.09x = 1,127,081.39
  5. Step 5: Solve for x
    x = 1,127,081.39/1,348.09
  6. Step 6: Final answer
    x = 836.06

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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.