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Finding the Fourth Proportional to 709.03, 983.06 and 686.25

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Solution

The fourth proportional to 709.03, 983.06 and 686.25 is: 951.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.03 : 983.06 = 686.25 : x
  2. Step 2: Convert to fraction form
    709.03/983.06 = 686.25/x
  3. Step 3: Cross multiply
    709.03x = 983.06 × 686.25
  4. Step 4: Simplify right side
    709.03x = 674,624.93
  5. Step 5: Solve for x
    x = 674,624.93/709.03
  6. Step 6: Final answer
    x = 951.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.