Home / 1,516.22-2,274.23-420.59

Finding the Fourth Proportional to 1,516.22, 2,274.23 and 420.59

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Solution

The fourth proportional to 1,516.22, 2,274.23 and 420.59 is: 630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.22 : 2,274.23 = 420.59 : x
  2. Step 2: Convert to fraction form
    1,516.22/2,274.23 = 420.59/x
  3. Step 3: Cross multiply
    1,516.22x = 2,274.23 × 420.59
  4. Step 4: Simplify right side
    1,516.22x = 956,522.77
  5. Step 5: Solve for x
    x = 956,522.77/1,516.22
  6. Step 6: Final answer
    x = 630.86

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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.