Home / 1,433.02-2,149.63-459.20

Finding the Fourth Proportional to 1,433.02, 2,149.63 and 459.20

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Solution

The fourth proportional to 1,433.02, 2,149.63 and 459.20 is: 688.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433.02 : 2,149.63 = 459.20 : x
  2. Step 2: Convert to fraction form
    1,433.02/2,149.63 = 459.20/x
  3. Step 3: Cross multiply
    1,433.02x = 2,149.63 × 459.20
  4. Step 4: Simplify right side
    1,433.02x = 987,110.10
  5. Step 5: Solve for x
    x = 987,110.10/1,433.02
  6. Step 6: Final answer
    x = 688.83

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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.