Home / 1,266.56-1,747.85-707.00

Finding the Fourth Proportional to 1,266.56, 1,747.85 and 707.00

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Solution

The fourth proportional to 1,266.56, 1,747.85 and 707.00 is: 975.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266.56 : 1,747.85 = 707.00 : x
  2. Step 2: Convert to fraction form
    1,266.56/1,747.85 = 707.00/x
  3. Step 3: Cross multiply
    1,266.56x = 1,747.85 × 707.00
  4. Step 4: Simplify right side
    1,266.56x = 1,235,717.68
  5. Step 5: Solve for x
    x = 1,235,717.68/1,266.56
  6. Step 6: Final answer
    x = 975.65

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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.