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Finding the Fourth Proportional to 676.41, 1,014.57 and 631.32

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Solution

The fourth proportional to 676.41, 1,014.57 and 631.32 is: 946.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.41 : 1,014.57 = 631.32 : x
  2. Step 2: Convert to fraction form
    676.41/1,014.57 = 631.32/x
  3. Step 3: Cross multiply
    676.41x = 1,014.57 × 631.32
  4. Step 4: Simplify right side
    676.41x = 640,518.33
  5. Step 5: Solve for x
    x = 640,518.33/676.41
  6. Step 6: Final answer
    x = 946.94

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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.