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Finding the Fourth Proportional to 1,260, 1,738.76 and 700.46

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Solution

The fourth proportional to 1,260, 1,738.76 and 700.46 is: 966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260 : 1,738.76 = 700.46 : x
  2. Step 2: Convert to fraction form
    1,260/1,738.76 = 700.46/x
  3. Step 3: Cross multiply
    1,260x = 1,738.76 × 700.46
  4. Step 4: Simplify right side
    1,260x = 1,217,919.63
  5. Step 5: Solve for x
    x = 1,217,919.63/1,260
  6. Step 6: Final answer
    x = 966.60

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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.