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Finding the Fourth Proportional to 1,253.89, 1,730.34 and 694.34

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Solution

The fourth proportional to 1,253.89, 1,730.34 and 694.34 is: 958.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253.89 : 1,730.34 = 694.34 : x
  2. Step 2: Convert to fraction form
    1,253.89/1,730.34 = 694.34/x
  3. Step 3: Cross multiply
    1,253.89x = 1,730.34 × 694.34
  4. Step 4: Simplify right side
    1,253.89x = 1,201,453.80
  5. Step 5: Solve for x
    x = 1,201,453.80/1,253.89
  6. Step 6: Final answer
    x = 958.18

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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.