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Finding the Fourth Proportional to 569.42, 785.71 and 320.73

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Solution

The fourth proportional to 569.42, 785.71 and 320.73 is: 442.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.42 : 785.71 = 320.73 : x
  2. Step 2: Convert to fraction form
    569.42/785.71 = 320.73/x
  3. Step 3: Cross multiply
    569.42x = 785.71 × 320.73
  4. Step 4: Simplify right side
    569.42x = 251,999.16
  5. Step 5: Solve for x
    x = 251,999.16/569.42
  6. Step 6: Final answer
    x = 442.55

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