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Finding the Fourth Proportional to 999.56, 1,498.02 and 633.72

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Solution

The fourth proportional to 999.56, 1,498.02 and 633.72 is: 949.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.56 : 1,498.02 = 633.72 : x
  2. Step 2: Convert to fraction form
    999.56/1,498.02 = 633.72/x
  3. Step 3: Cross multiply
    999.56x = 1,498.02 × 633.72
  4. Step 4: Simplify right side
    999.56x = 949,325.23
  5. Step 5: Solve for x
    x = 949,325.23/999.56
  6. Step 6: Final answer
    x = 949.74

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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.