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Finding the Fourth Proportional to 568.97, 785.16 and 320.25

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Solution

The fourth proportional to 568.97, 785.16 and 320.25 is: 441.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.97 : 785.16 = 320.25 : x
  2. Step 2: Convert to fraction form
    568.97/785.16 = 320.25/x
  3. Step 3: Cross multiply
    568.97x = 785.16 × 320.25
  4. Step 4: Simplify right side
    568.97x = 251,447.49
  5. Step 5: Solve for x
    x = 251,447.49/568.97
  6. Step 6: Final answer
    x = 441.94

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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.