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Finding the Fourth Proportional to 889.63, 1,333.64 and 499.62

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Solution

The fourth proportional to 889.63, 1,333.64 and 499.62 is: 748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.63 : 1,333.64 = 499.62 : x
  2. Step 2: Convert to fraction form
    889.63/1,333.64 = 499.62/x
  3. Step 3: Cross multiply
    889.63x = 1,333.64 × 499.62
  4. Step 4: Simplify right side
    889.63x = 666,304.05
  5. Step 5: Solve for x
    x = 666,304.05/889.63
  6. Step 6: Final answer
    x = 748.97

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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.