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Finding the Fourth Proportional to 1,203.51, 1,805.26 and 472.57

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Solution

The fourth proportional to 1,203.51, 1,805.26 and 472.57 is: 708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.51 : 1,805.26 = 472.57 : x
  2. Step 2: Convert to fraction form
    1,203.51/1,805.26 = 472.57/x
  3. Step 3: Cross multiply
    1,203.51x = 1,805.26 × 472.57
  4. Step 4: Simplify right side
    1,203.51x = 853,111.72
  5. Step 5: Solve for x
    x = 853,111.72/1,203.51
  6. Step 6: Final answer
    x = 708.85

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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.