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Finding the Fourth Proportional to 656.63, 906.02 and 435.47

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Solution

The fourth proportional to 656.63, 906.02 and 435.47 is: 600.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.63 : 906.02 = 435.47 : x
  2. Step 2: Convert to fraction form
    656.63/906.02 = 435.47/x
  3. Step 3: Cross multiply
    656.63x = 906.02 × 435.47
  4. Step 4: Simplify right side
    656.63x = 394,541.09
  5. Step 5: Solve for x
    x = 394,541.09/656.63
  6. Step 6: Final answer
    x = 600.86

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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.