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Finding the Fourth Proportional to 1,203.93, 1,805.46 and 618.30

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Solution

The fourth proportional to 1,203.93, 1,805.46 and 618.30 is: 927.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.93 : 1,805.46 = 618.30 : x
  2. Step 2: Convert to fraction form
    1,203.93/1,805.46 = 618.30/x
  3. Step 3: Cross multiply
    1,203.93x = 1,805.46 × 618.30
  4. Step 4: Simplify right side
    1,203.93x = 1,116,315.92
  5. Step 5: Solve for x
    x = 1,116,315.92/1,203.93
  6. Step 6: Final answer
    x = 927.23

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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.