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Finding the Fourth Proportional to 656.27, 905.51 and 435.09

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Solution

The fourth proportional to 656.27, 905.51 and 435.09 is: 600.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.27 : 905.51 = 435.09 : x
  2. Step 2: Convert to fraction form
    656.27/905.51 = 435.09/x
  3. Step 3: Cross multiply
    656.27x = 905.51 × 435.09
  4. Step 4: Simplify right side
    656.27x = 393,976.17
  5. Step 5: Solve for x
    x = 393,976.17/656.27
  6. Step 6: Final answer
    x = 600.33

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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.