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Finding the Fourth Proportional to 706.84, 1,061.60 and 676.12

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Solution

The fourth proportional to 706.84, 1,061.60 and 676.12 is: 1,015.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.84 : 1,061.60 = 676.12 : x
  2. Step 2: Convert to fraction form
    706.84/1,061.60 = 676.12/x
  3. Step 3: Cross multiply
    706.84x = 1,061.60 × 676.12
  4. Step 4: Simplify right side
    706.84x = 717,768.99
  5. Step 5: Solve for x
    x = 717,768.99/706.84
  6. Step 6: Final answer
    x = 1,015.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.