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Finding the Fourth Proportional to 582.91, 804.45 and 320.95

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Solution

The fourth proportional to 582.91, 804.45 and 320.95 is: 442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.91 : 804.45 = 320.95 : x
  2. Step 2: Convert to fraction form
    582.91/804.45 = 320.95/x
  3. Step 3: Cross multiply
    582.91x = 804.45 × 320.95
  4. Step 4: Simplify right side
    582.91x = 258,188.23
  5. Step 5: Solve for x
    x = 258,188.23/582.91
  6. Step 6: Final answer
    x = 442.93

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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.