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Finding the Fourth Proportional to 491, 677.58 and 284.04

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Solution

The fourth proportional to 491, 677.58 and 284.04 is: 391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    491 : 677.58 = 284.04 : x
  2. Step 2: Convert to fraction form
    491/677.58 = 284.04/x
  3. Step 3: Cross multiply
    491x = 677.58 × 284.04
  4. Step 4: Simplify right side
    491x = 192,459.82
  5. Step 5: Solve for x
    x = 192,459.82/491
  6. Step 6: Final answer
    x = 391.98

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