Home / 1,212.24-1,818.64-346.54

Finding the Fourth Proportional to 1,212.24, 1,818.64 and 346.54

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Solution

The fourth proportional to 1,212.24, 1,818.64 and 346.54 is: 519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212.24 : 1,818.64 = 346.54 : x
  2. Step 2: Convert to fraction form
    1,212.24/1,818.64 = 346.54/x
  3. Step 3: Cross multiply
    1,212.24x = 1,818.64 × 346.54
  4. Step 4: Simplify right side
    1,212.24x = 630,231.51
  5. Step 5: Solve for x
    x = 630,231.51/1,212.24
  6. Step 6: Final answer
    x = 519.89

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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.