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Finding the Fourth Proportional to 546.84, 819.54 and 257.67

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Solution

The fourth proportional to 546.84, 819.54 and 257.67 is: 386.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.84 : 819.54 = 257.67 : x
  2. Step 2: Convert to fraction form
    546.84/819.54 = 257.67/x
  3. Step 3: Cross multiply
    546.84x = 819.54 × 257.67
  4. Step 4: Simplify right side
    546.84x = 211,170.87
  5. Step 5: Solve for x
    x = 211,170.87/546.84
  6. Step 6: Final answer
    x = 386.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.