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Finding the Fourth Proportional to 741.02, 1,110.81 and 659.42

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Solution

The fourth proportional to 741.02, 1,110.81 and 659.42 is: 988.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.02 : 1,110.81 = 659.42 : x
  2. Step 2: Convert to fraction form
    741.02/1,110.81 = 659.42/x
  3. Step 3: Cross multiply
    741.02x = 1,110.81 × 659.42
  4. Step 4: Simplify right side
    741.02x = 732,490.33
  5. Step 5: Solve for x
    x = 732,490.33/741.02
  6. Step 6: Final answer
    x = 988.49

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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.