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Finding the Fourth Proportional to 1,336.54, 2,003.73 and 557.13

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Solution

The fourth proportional to 1,336.54, 2,003.73 and 557.13 is: 835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336.54 : 2,003.73 = 557.13 : x
  2. Step 2: Convert to fraction form
    1,336.54/2,003.73 = 557.13/x
  3. Step 3: Cross multiply
    1,336.54x = 2,003.73 × 557.13
  4. Step 4: Simplify right side
    1,336.54x = 1,116,331.69
  5. Step 5: Solve for x
    x = 1,116,331.69/1,336.54
  6. Step 6: Final answer
    x = 835.24

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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.