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Finding the Fourth Proportional to 1,593.45, 2,390.54 and 553.41

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Solution

The fourth proportional to 1,593.45, 2,390.54 and 553.41 is: 830.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,593.45 : 2,390.54 = 553.41 : x
  2. Step 2: Convert to fraction form
    1,593.45/2,390.54 = 553.41/x
  3. Step 3: Cross multiply
    1,593.45x = 2,390.54 × 553.41
  4. Step 4: Simplify right side
    1,593.45x = 1,322,945.97
  5. Step 5: Solve for x
    x = 1,322,945.97/1,593.45
  6. Step 6: Final answer
    x = 830.24

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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.