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Finding the Fourth Proportional to 1,203.18, 1,803.45 and 472.62

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Solution

The fourth proportional to 1,203.18, 1,803.45 and 472.62 is: 708.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.18 : 1,803.45 = 472.62 : x
  2. Step 2: Convert to fraction form
    1,203.18/1,803.45 = 472.62/x
  3. Step 3: Cross multiply
    1,203.18x = 1,803.45 × 472.62
  4. Step 4: Simplify right side
    1,203.18x = 852,346.54
  5. Step 5: Solve for x
    x = 852,346.54/1,203.18
  6. Step 6: Final answer
    x = 708.41

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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.