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Finding the Fourth Proportional to 590.52, 815.10 and 354.60

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Solution

The fourth proportional to 590.52, 815.10 and 354.60 is: 489.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.52 : 815.10 = 354.60 : x
  2. Step 2: Convert to fraction form
    590.52/815.10 = 354.60/x
  3. Step 3: Cross multiply
    590.52x = 815.10 × 354.60
  4. Step 4: Simplify right side
    590.52x = 289,034.46
  5. Step 5: Solve for x
    x = 289,034.46/590.52
  6. Step 6: Final answer
    x = 489.46

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