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Finding the Fourth Proportional to 956.70, 1,424.43 and 951.30

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Solution

The fourth proportional to 956.70, 1,424.43 and 951.30 is: 1,416.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.70 : 1,424.43 = 951.30 : x
  2. Step 2: Convert to fraction form
    956.70/1,424.43 = 951.30/x
  3. Step 3: Cross multiply
    956.70x = 1,424.43 × 951.30
  4. Step 4: Simplify right side
    956.70x = 1,355,060.26
  5. Step 5: Solve for x
    x = 1,355,060.26/956.70
  6. Step 6: Final answer
    x = 1,416.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.