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Finding the Fourth Proportional to 1,465.89, 2,198.60 and 541.89

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Solution

The fourth proportional to 1,465.89, 2,198.60 and 541.89 is: 812.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.89 : 2,198.60 = 541.89 : x
  2. Step 2: Convert to fraction form
    1,465.89/2,198.60 = 541.89/x
  3. Step 3: Cross multiply
    1,465.89x = 2,198.60 × 541.89
  4. Step 4: Simplify right side
    1,465.89x = 1,191,385.65
  5. Step 5: Solve for x
    x = 1,191,385.65/1,465.89
  6. Step 6: Final answer
    x = 812.74

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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.