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Finding the Fourth Proportional to 956.18, 1,431.84 and 630.56

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Solution

The fourth proportional to 956.18, 1,431.84 and 630.56 is: 944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.18 : 1,431.84 = 630.56 : x
  2. Step 2: Convert to fraction form
    956.18/1,431.84 = 630.56/x
  3. Step 3: Cross multiply
    956.18x = 1,431.84 × 630.56
  4. Step 4: Simplify right side
    956.18x = 902,857.88
  5. Step 5: Solve for x
    x = 902,857.88/956.18
  6. Step 6: Final answer
    x = 944.23

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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.