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Finding the Fourth Proportional to 657.65, 978.32 and 651.06

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Solution

The fourth proportional to 657.65, 978.32 and 651.06 is: 968.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.65 : 978.32 = 651.06 : x
  2. Step 2: Convert to fraction form
    657.65/978.32 = 651.06/x
  3. Step 3: Cross multiply
    657.65x = 978.32 × 651.06
  4. Step 4: Simplify right side
    657.65x = 636,945.02
  5. Step 5: Solve for x
    x = 636,945.02/657.65
  6. Step 6: Final answer
    x = 968.52

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