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Finding the Fourth Proportional to 1,546.64, 2,319.96 and 634

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Solution

The fourth proportional to 1,546.64, 2,319.96 and 634 is: 951

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,546.64 : 2,319.96 = 634 : x
  2. Step 2: Convert to fraction form
    1,546.64/2,319.96 = 634/x
  3. Step 3: Cross multiply
    1,546.64x = 2,319.96 × 634
  4. Step 4: Simplify right side
    1,546.64x = 1,470,854.64
  5. Step 5: Solve for x
    x = 1,470,854.64/1,546.64
  6. Step 6: Final answer
    x = 951

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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.