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Finding the Fourth Proportional to 706.72, 1,060.98 and 515.56

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Solution

The fourth proportional to 706.72, 1,060.98 and 515.56 is: 774.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.72 : 1,060.98 = 515.56 : x
  2. Step 2: Convert to fraction form
    706.72/1,060.98 = 515.56/x
  3. Step 3: Cross multiply
    706.72x = 1,060.98 × 515.56
  4. Step 4: Simplify right side
    706.72x = 546,998.85
  5. Step 5: Solve for x
    x = 546,998.85/706.72
  6. Step 6: Final answer
    x = 774.00

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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.