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Finding the Fourth Proportional to 384.81, 577.09 and 124.75

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Solution

The fourth proportional to 384.81, 577.09 and 124.75 is: 187.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.81 : 577.09 = 124.75 : x
  2. Step 2: Convert to fraction form
    384.81/577.09 = 124.75/x
  3. Step 3: Cross multiply
    384.81x = 577.09 × 124.75
  4. Step 4: Simplify right side
    384.81x = 71,991.98
  5. Step 5: Solve for x
    x = 71,991.98/384.81
  6. Step 6: Final answer
    x = 187.08

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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.