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Finding the Fourth Proportional to 672.09, 929.66 and 568.82

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Solution

The fourth proportional to 672.09, 929.66 and 568.82 is: 786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.09 : 929.66 = 568.82 : x
  2. Step 2: Convert to fraction form
    672.09/929.66 = 568.82/x
  3. Step 3: Cross multiply
    672.09x = 929.66 × 568.82
  4. Step 4: Simplify right side
    672.09x = 528,809.20
  5. Step 5: Solve for x
    x = 528,809.20/672.09
  6. Step 6: Final answer
    x = 786.81

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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.