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Finding the Fourth Proportional to 1,020.27, 1,529.73 and 655.32

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Solution

The fourth proportional to 1,020.27, 1,529.73 and 655.32 is: 982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.27 : 1,529.73 = 655.32 : x
  2. Step 2: Convert to fraction form
    1,020.27/1,529.73 = 655.32/x
  3. Step 3: Cross multiply
    1,020.27x = 1,529.73 × 655.32
  4. Step 4: Simplify right side
    1,020.27x = 1,002,462.66
  5. Step 5: Solve for x
    x = 1,002,462.66/1,020.27
  6. Step 6: Final answer
    x = 982.55

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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.