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Finding the Fourth Proportional to 1,260.23, 1,738.91 and 700.64

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Solution

The fourth proportional to 1,260.23, 1,738.91 and 700.64 is: 966.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.23 : 1,738.91 = 700.64 : x
  2. Step 2: Convert to fraction form
    1,260.23/1,738.91 = 700.64/x
  3. Step 3: Cross multiply
    1,260.23x = 1,738.91 × 700.64
  4. Step 4: Simplify right side
    1,260.23x = 1,218,349.90
  5. Step 5: Solve for x
    x = 1,218,349.90/1,260.23
  6. Step 6: Final answer
    x = 966.77

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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.