Home / 1,318.44-1,977.43-440.81

Finding the Fourth Proportional to 1,318.44, 1,977.43 and 440.81

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Solution

The fourth proportional to 1,318.44, 1,977.43 and 440.81 is: 661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.44 : 1,977.43 = 440.81 : x
  2. Step 2: Convert to fraction form
    1,318.44/1,977.43 = 440.81/x
  3. Step 3: Cross multiply
    1,318.44x = 1,977.43 × 440.81
  4. Step 4: Simplify right side
    1,318.44x = 871,670.92
  5. Step 5: Solve for x
    x = 871,670.92/1,318.44
  6. Step 6: Final answer
    x = 661.14

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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.