Home / 1,127.27-1,690.93-305.55

Finding the Fourth Proportional to 1,127.27, 1,690.93 and 305.55

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Solution

The fourth proportional to 1,127.27, 1,690.93 and 305.55 is: 458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.27 : 1,690.93 = 305.55 : x
  2. Step 2: Convert to fraction form
    1,127.27/1,690.93 = 305.55/x
  3. Step 3: Cross multiply
    1,127.27x = 1,690.93 × 305.55
  4. Step 4: Simplify right side
    1,127.27x = 516,663.66
  5. Step 5: Solve for x
    x = 516,663.66/1,127.27
  6. Step 6: Final answer
    x = 458.33

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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.