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Finding the Fourth Proportional to 384.54, 577.11 and 263.66

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Solution

The fourth proportional to 384.54, 577.11 and 263.66 is: 395.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.54 : 577.11 = 263.66 : x
  2. Step 2: Convert to fraction form
    384.54/577.11 = 263.66/x
  3. Step 3: Cross multiply
    384.54x = 577.11 × 263.66
  4. Step 4: Simplify right side
    384.54x = 152,160.82
  5. Step 5: Solve for x
    x = 152,160.82/384.54
  6. Step 6: Final answer
    x = 395.70

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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.