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Finding the Fourth Proportional to 582.84, 805.02 and 396

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Solution

The fourth proportional to 582.84, 805.02 and 396 is: 546.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.84 : 805.02 = 396 : x
  2. Step 2: Convert to fraction form
    582.84/805.02 = 396/x
  3. Step 3: Cross multiply
    582.84x = 805.02 × 396
  4. Step 4: Simplify right side
    582.84x = 318,787.92
  5. Step 5: Solve for x
    x = 318,787.92/582.84
  6. Step 6: Final answer
    x = 546.96

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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.