Home / 1,515.15-2,271.96-475.25

Finding the Fourth Proportional to 1,515.15, 2,271.96 and 475.25

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Solution

The fourth proportional to 1,515.15, 2,271.96 and 475.25 is: 712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.15 : 2,271.96 = 475.25 : x
  2. Step 2: Convert to fraction form
    1,515.15/2,271.96 = 475.25/x
  3. Step 3: Cross multiply
    1,515.15x = 2,271.96 × 475.25
  4. Step 4: Simplify right side
    1,515.15x = 1,079,737.63
  5. Step 5: Solve for x
    x = 1,079,737.63/1,515.15
  6. Step 6: Final answer
    x = 712.63

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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.