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Finding the Fourth Proportional to 684.91, 1,028.24 and 588.03

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Solution

The fourth proportional to 684.91, 1,028.24 and 588.03 is: 882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.91 : 1,028.24 = 588.03 : x
  2. Step 2: Convert to fraction form
    684.91/1,028.24 = 588.03/x
  3. Step 3: Cross multiply
    684.91x = 1,028.24 × 588.03
  4. Step 4: Simplify right side
    684.91x = 604,634.87
  5. Step 5: Solve for x
    x = 604,634.87/684.91
  6. Step 6: Final answer
    x = 882.80

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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.