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Finding the Fourth Proportional to 569.04, 785.24 and 320.40

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Solution

The fourth proportional to 569.04, 785.24 and 320.40 is: 442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.04 : 785.24 = 320.40 : x
  2. Step 2: Convert to fraction form
    569.04/785.24 = 320.40/x
  3. Step 3: Cross multiply
    569.04x = 785.24 × 320.40
  4. Step 4: Simplify right side
    569.04x = 251,590.90
  5. Step 5: Solve for x
    x = 251,590.90/569.04
  6. Step 6: Final answer
    x = 442.13

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