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Finding the Fourth Proportional to 1,362.75, 2,041.41 and 631.32

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Solution

The fourth proportional to 1,362.75, 2,041.41 and 631.32 is: 945.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.75 : 2,041.41 = 631.32 : x
  2. Step 2: Convert to fraction form
    1,362.75/2,041.41 = 631.32/x
  3. Step 3: Cross multiply
    1,362.75x = 2,041.41 × 631.32
  4. Step 4: Simplify right side
    1,362.75x = 1,288,782.96
  5. Step 5: Solve for x
    x = 1,288,782.96/1,362.75
  6. Step 6: Final answer
    x = 945.72

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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.