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Finding the Fourth Proportional to 1,203.88, 1,805.20 and 473.06

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Solution

The fourth proportional to 1,203.88, 1,805.20 and 473.06 is: 709.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.88 : 1,805.20 = 473.06 : x
  2. Step 2: Convert to fraction form
    1,203.88/1,805.20 = 473.06/x
  3. Step 3: Cross multiply
    1,203.88x = 1,805.20 × 473.06
  4. Step 4: Simplify right side
    1,203.88x = 853,963.75
  5. Step 5: Solve for x
    x = 853,963.75/1,203.88
  6. Step 6: Final answer
    x = 709.34

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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.