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Finding the Fourth Proportional to 384.93, 577.39 and 153.87

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Solution

The fourth proportional to 384.93, 577.39 and 153.87 is: 230.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.93 : 577.39 = 153.87 : x
  2. Step 2: Convert to fraction form
    384.93/577.39 = 153.87/x
  3. Step 3: Cross multiply
    384.93x = 577.39 × 153.87
  4. Step 4: Simplify right side
    384.93x = 88,845.21
  5. Step 5: Solve for x
    x = 88,845.21/384.93
  6. Step 6: Final answer
    x = 230.81

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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.