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Finding the Fourth Proportional to 582.61, 804.05 and 320.68

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Solution

The fourth proportional to 582.61, 804.05 and 320.68 is: 442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.61 : 804.05 = 320.68 : x
  2. Step 2: Convert to fraction form
    582.61/804.05 = 320.68/x
  3. Step 3: Cross multiply
    582.61x = 804.05 × 320.68
  4. Step 4: Simplify right side
    582.61x = 257,839.74
  5. Step 5: Solve for x
    x = 257,839.74/582.61
  6. Step 6: Final answer
    x = 442.56

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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.