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Finding the Fourth Proportional to 1,514.65, 2,271.57 and 540.64

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Solution

The fourth proportional to 1,514.65, 2,271.57 and 540.64 is: 810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514.65 : 2,271.57 = 540.64 : x
  2. Step 2: Convert to fraction form
    1,514.65/2,271.57 = 540.64/x
  3. Step 3: Cross multiply
    1,514.65x = 2,271.57 × 540.64
  4. Step 4: Simplify right side
    1,514.65x = 1,228,101.60
  5. Step 5: Solve for x
    x = 1,228,101.60/1,514.65
  6. Step 6: Final answer
    x = 810.82

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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.