Home / 1,230.24-1,845.40-460.72

Finding the Fourth Proportional to 1,230.24, 1,845.40 and 460.72

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Solution

The fourth proportional to 1,230.24, 1,845.40 and 460.72 is: 691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.24 : 1,845.40 = 460.72 : x
  2. Step 2: Convert to fraction form
    1,230.24/1,845.40 = 460.72/x
  3. Step 3: Cross multiply
    1,230.24x = 1,845.40 × 460.72
  4. Step 4: Simplify right side
    1,230.24x = 850,212.69
  5. Step 5: Solve for x
    x = 850,212.69/1,230.24
  6. Step 6: Final answer
    x = 691.09

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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.