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Finding the Fourth Proportional to 384.70, 572.97 and 382.84

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Solution

The fourth proportional to 384.70, 572.97 and 382.84 is: 570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.70 : 572.97 = 382.84 : x
  2. Step 2: Convert to fraction form
    384.70/572.97 = 382.84/x
  3. Step 3: Cross multiply
    384.70x = 572.97 × 382.84
  4. Step 4: Simplify right side
    384.70x = 219,355.83
  5. Step 5: Solve for x
    x = 219,355.83/384.70
  6. Step 6: Final answer
    x = 570.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.