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Finding the Fourth Proportional to 653, 978.93 and 306.15

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Solution

The fourth proportional to 653, 978.93 and 306.15 is: 458.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    653 : 978.93 = 306.15 : x
  2. Step 2: Convert to fraction form
    653/978.93 = 306.15/x
  3. Step 3: Cross multiply
    653x = 978.93 × 306.15
  4. Step 4: Simplify right side
    653x = 299,699.42
  5. Step 5: Solve for x
    x = 299,699.42/653
  6. Step 6: Final answer
    x = 458.96

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