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Finding the Fourth Proportional to 384.90, 577.34 and 110.99

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Solution

The fourth proportional to 384.90, 577.34 and 110.99 is: 166.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.90 : 577.34 = 110.99 : x
  2. Step 2: Convert to fraction form
    384.90/577.34 = 110.99/x
  3. Step 3: Cross multiply
    384.90x = 577.34 × 110.99
  4. Step 4: Simplify right side
    384.90x = 64,078.97
  5. Step 5: Solve for x
    x = 64,078.97/384.90
  6. Step 6: Final answer
    x = 166.48

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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.