Home / 1,433.51-2,149.80-459.38

Finding the Fourth Proportional to 1,433.51, 2,149.80 and 459.38

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Solution

The fourth proportional to 1,433.51, 2,149.80 and 459.38 is: 688.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.51 : 2,149.80 = 459.38 : x
  2. Step 2: Convert to fraction form
    1,433.51/2,149.80 = 459.38/x
  3. Step 3: Cross multiply
    1,433.51x = 2,149.80 × 459.38
  4. Step 4: Simplify right side
    1,433.51x = 987,564.38
  5. Step 5: Solve for x
    x = 987,564.38/1,433.51
  6. Step 6: Final answer
    x = 688.92

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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.