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Finding the Fourth Proportional to 657.01, 906.63 and 408.32

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Solution

The fourth proportional to 657.01, 906.63 and 408.32 is: 563.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.01 : 906.63 = 408.32 : x
  2. Step 2: Convert to fraction form
    657.01/906.63 = 408.32/x
  3. Step 3: Cross multiply
    657.01x = 906.63 × 408.32
  4. Step 4: Simplify right side
    657.01x = 370,197.51
  5. Step 5: Solve for x
    x = 370,197.51/657.01
  6. Step 6: Final answer
    x = 563.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.