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Finding the Fourth Proportional to 696.85, 960.51 and 578.59

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Solution

The fourth proportional to 696.85, 960.51 and 578.59 is: 797.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.85 : 960.51 = 578.59 : x
  2. Step 2: Convert to fraction form
    696.85/960.51 = 578.59/x
  3. Step 3: Cross multiply
    696.85x = 960.51 × 578.59
  4. Step 4: Simplify right side
    696.85x = 555,743.40
  5. Step 5: Solve for x
    x = 555,743.40/696.85
  6. Step 6: Final answer
    x = 797.50

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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.