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Finding the Fourth Proportional to 582.99, 804.49 and 321

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Solution

The fourth proportional to 582.99, 804.49 and 321 is: 442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.99 : 804.49 = 321 : x
  2. Step 2: Convert to fraction form
    582.99/804.49 = 321/x
  3. Step 3: Cross multiply
    582.99x = 804.49 × 321
  4. Step 4: Simplify right side
    582.99x = 258,241.29
  5. Step 5: Solve for x
    x = 258,241.29/582.99
  6. Step 6: Final answer
    x = 442.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.