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Finding the Fourth Proportional to 741.02, 1,111.21 and 329.99

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Solution

The fourth proportional to 741.02, 1,111.21 and 329.99 is: 494.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.02 : 1,111.21 = 329.99 : x
  2. Step 2: Convert to fraction form
    741.02/1,111.21 = 329.99/x
  3. Step 3: Cross multiply
    741.02x = 1,111.21 × 329.99
  4. Step 4: Simplify right side
    741.02x = 366,681.81
  5. Step 5: Solve for x
    x = 366,681.81/741.02
  6. Step 6: Final answer
    x = 494.84

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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.