Home / 1,516.48-2,274.73-420.85

Finding the Fourth Proportional to 1,516.48, 2,274.73 and 420.85

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Solution

The fourth proportional to 1,516.48, 2,274.73 and 420.85 is: 631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.48 : 2,274.73 = 420.85 : x
  2. Step 2: Convert to fraction form
    1,516.48/2,274.73 = 420.85/x
  3. Step 3: Cross multiply
    1,516.48x = 2,274.73 × 420.85
  4. Step 4: Simplify right side
    1,516.48x = 957,312.59
  5. Step 5: Solve for x
    x = 957,312.59/1,516.48
  6. Step 6: Final answer
    x = 631.27

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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.