Home / 1,127.30-1,691.06-305.58

Finding the Fourth Proportional to 1,127.30, 1,691.06 and 305.58

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Solution

The fourth proportional to 1,127.30, 1,691.06 and 305.58 is: 458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.30 : 1,691.06 = 305.58 : x
  2. Step 2: Convert to fraction form
    1,127.30/1,691.06 = 305.58/x
  3. Step 3: Cross multiply
    1,127.30x = 1,691.06 × 305.58
  4. Step 4: Simplify right side
    1,127.30x = 516,752.59
  5. Step 5: Solve for x
    x = 516,752.59/1,127.30
  6. Step 6: Final answer
    x = 458.40

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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.