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Finding the Fourth Proportional to 740.82, 1,110.49 and 480.99

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Solution

The fourth proportional to 740.82, 1,110.49 and 480.99 is: 721.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    740.82 : 1,110.49 = 480.99 : x
  2. Step 2: Convert to fraction form
    740.82/1,110.49 = 480.99/x
  3. Step 3: Cross multiply
    740.82x = 1,110.49 × 480.99
  4. Step 4: Simplify right side
    740.82x = 534,133.38
  5. Step 5: Solve for x
    x = 534,133.38/740.82
  6. Step 6: Final answer
    x = 721.00

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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.