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Finding the Fourth Proportional to 1,259.99, 1,738.67 and 700.48

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Solution

The fourth proportional to 1,259.99, 1,738.67 and 700.48 is: 966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.99 : 1,738.67 = 700.48 : x
  2. Step 2: Convert to fraction form
    1,259.99/1,738.67 = 700.48/x
  3. Step 3: Cross multiply
    1,259.99x = 1,738.67 × 700.48
  4. Step 4: Simplify right side
    1,259.99x = 1,217,902.23
  5. Step 5: Solve for x
    x = 1,217,902.23/1,259.99
  6. Step 6: Final answer
    x = 966.60

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1.5x scale

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.