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Finding the Fourth Proportional to 368.18, 511.50 and 364.80

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Solution

The fourth proportional to 368.18, 511.50 and 364.80 is: 506.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.18 : 511.50 = 364.80 : x
  2. Step 2: Convert to fraction form
    368.18/511.50 = 364.80/x
  3. Step 3: Cross multiply
    368.18x = 511.50 × 364.80
  4. Step 4: Simplify right side
    368.18x = 186,595.20
  5. Step 5: Solve for x
    x = 186,595.20/368.18
  6. Step 6: Final answer
    x = 506.81

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.