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Finding the Fourth Proportional to 491.04, 733.33 and 393.68

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Solution

The fourth proportional to 491.04, 733.33 and 393.68 is: 587.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.04 : 733.33 = 393.68 : x
  2. Step 2: Convert to fraction form
    491.04/733.33 = 393.68/x
  3. Step 3: Cross multiply
    491.04x = 733.33 × 393.68
  4. Step 4: Simplify right side
    491.04x = 288,698.20
  5. Step 5: Solve for x
    x = 288,698.20/491.04
  6. Step 6: Final answer
    x = 587.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.