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Finding the Fourth Proportional to 435.37, 656.93 and 418.49

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Solution

The fourth proportional to 435.37, 656.93 and 418.49 is: 631.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.37 : 656.93 = 418.49 : x
  2. Step 2: Convert to fraction form
    435.37/656.93 = 418.49/x
  3. Step 3: Cross multiply
    435.37x = 656.93 × 418.49
  4. Step 4: Simplify right side
    435.37x = 274,918.64
  5. Step 5: Solve for x
    x = 274,918.64/435.37
  6. Step 6: Final answer
    x = 631.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.