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Finding the Fourth Proportional to 956.21, 1,319.57 and 624.44

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Solution

The fourth proportional to 956.21, 1,319.57 and 624.44 is: 861.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.21 : 1,319.57 = 624.44 : x
  2. Step 2: Convert to fraction form
    956.21/1,319.57 = 624.44/x
  3. Step 3: Cross multiply
    956.21x = 1,319.57 × 624.44
  4. Step 4: Simplify right side
    956.21x = 823,992.29
  5. Step 5: Solve for x
    x = 823,992.29/956.21
  6. Step 6: Final answer
    x = 861.73

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1.5x scale

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.