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Finding the Fourth Proportional to 1,525.11, 2,287.66 and 659.42

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Solution

The fourth proportional to 1,525.11, 2,287.66 and 659.42 is: 989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.11 : 2,287.66 = 659.42 : x
  2. Step 2: Convert to fraction form
    1,525.11/2,287.66 = 659.42/x
  3. Step 3: Cross multiply
    1,525.11x = 2,287.66 × 659.42
  4. Step 4: Simplify right side
    1,525.11x = 1,508,528.76
  5. Step 5: Solve for x
    x = 1,508,528.76/1,525.11
  6. Step 6: Final answer
    x = 989.13

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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.