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Finding the Fourth Proportional to 384, 572.16 and 380.16

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Solution

The fourth proportional to 384, 572.16 and 380.16 is: 566.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    384 : 572.16 = 380.16 : x
  2. Step 2: Convert to fraction form
    384/572.16 = 380.16/x
  3. Step 3: Cross multiply
    384x = 572.16 × 380.16
  4. Step 4: Simplify right side
    384x = 217,512.35
  5. Step 5: Solve for x
    x = 217,512.35/384
  6. Step 6: Final answer
    x = 566.44

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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.