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Finding the Fourth Proportional to 699.96, 964.77 and 559.65

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Solution

The fourth proportional to 699.96, 964.77 and 559.65 is: 771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.96 : 964.77 = 559.65 : x
  2. Step 2: Convert to fraction form
    699.96/964.77 = 559.65/x
  3. Step 3: Cross multiply
    699.96x = 964.77 × 559.65
  4. Step 4: Simplify right side
    699.96x = 539,933.53
  5. Step 5: Solve for x
    x = 539,933.53/699.96
  6. Step 6: Final answer
    x = 771.38

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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.