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Finding the Fourth Proportional to 656.98, 906.60 and 436.33

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Solution

The fourth proportional to 656.98, 906.60 and 436.33 is: 602.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.98 : 906.60 = 436.33 : x
  2. Step 2: Convert to fraction form
    656.98/906.60 = 436.33/x
  3. Step 3: Cross multiply
    656.98x = 906.60 × 436.33
  4. Step 4: Simplify right side
    656.98x = 395,576.78
  5. Step 5: Solve for x
    x = 395,576.78/656.98
  6. Step 6: Final answer
    x = 602.11

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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.