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Finding the Fourth Proportional to 631.09, 945.01 and 436.69

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Solution

The fourth proportional to 631.09, 945.01 and 436.69 is: 653.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.09 : 945.01 = 436.69 : x
  2. Step 2: Convert to fraction form
    631.09/945.01 = 436.69/x
  3. Step 3: Cross multiply
    631.09x = 945.01 × 436.69
  4. Step 4: Simplify right side
    631.09x = 412,676.42
  5. Step 5: Solve for x
    x = 412,676.42/631.09
  6. Step 6: Final answer
    x = 653.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.