Home / 1,460.13-2,190.30-459.39

Finding the Fourth Proportional to 1,460.13, 2,190.30 and 459.39

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Solution

The fourth proportional to 1,460.13, 2,190.30 and 459.39 is: 689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.13 : 2,190.30 = 459.39 : x
  2. Step 2: Convert to fraction form
    1,460.13/2,190.30 = 459.39/x
  3. Step 3: Cross multiply
    1,460.13x = 2,190.30 × 459.39
  4. Step 4: Simplify right side
    1,460.13x = 1,006,201.92
  5. Step 5: Solve for x
    x = 1,006,201.92/1,460.13
  6. Step 6: Final answer
    x = 689.12

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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.