Home / 1,267.55-1,749.11-707.97

Finding the Fourth Proportional to 1,267.55, 1,749.11 and 707.97

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Solution

The fourth proportional to 1,267.55, 1,749.11 and 707.97 is: 976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.55 : 1,749.11 = 707.97 : x
  2. Step 2: Convert to fraction form
    1,267.55/1,749.11 = 707.97/x
  3. Step 3: Cross multiply
    1,267.55x = 1,749.11 × 707.97
  4. Step 4: Simplify right side
    1,267.55x = 1,238,317.41
  5. Step 5: Solve for x
    x = 1,238,317.41/1,267.55
  6. Step 6: Final answer
    x = 976.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.