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Finding the Fourth Proportional to 491.25, 735.57 and 393.29

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Solution

The fourth proportional to 491.25, 735.57 and 393.29 is: 588.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.25 : 735.57 = 393.29 : x
  2. Step 2: Convert to fraction form
    491.25/735.57 = 393.29/x
  3. Step 3: Cross multiply
    491.25x = 735.57 × 393.29
  4. Step 4: Simplify right side
    491.25x = 289,292.33
  5. Step 5: Solve for x
    x = 289,292.33/491.25
  6. Step 6: Final answer
    x = 588.89

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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.