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Finding the Fourth Proportional to 1,203.92, 1,804.50 and 656.36

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Solution

The fourth proportional to 1,203.92, 1,804.50 and 656.36 is: 983.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.92 : 1,804.50 = 656.36 : x
  2. Step 2: Convert to fraction form
    1,203.92/1,804.50 = 656.36/x
  3. Step 3: Cross multiply
    1,203.92x = 1,804.50 × 656.36
  4. Step 4: Simplify right side
    1,203.92x = 1,184,401.62
  5. Step 5: Solve for x
    x = 1,184,401.62/1,203.92
  6. Step 6: Final answer
    x = 983.79

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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.