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Finding the Fourth Proportional to 368.69, 508.50 and 228.89

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Solution

The fourth proportional to 368.69, 508.50 and 228.89 is: 315.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.69 : 508.50 = 228.89 : x
  2. Step 2: Convert to fraction form
    368.69/508.50 = 228.89/x
  3. Step 3: Cross multiply
    368.69x = 508.50 × 228.89
  4. Step 4: Simplify right side
    368.69x = 116,388.45
  5. Step 5: Solve for x
    x = 116,388.45/368.69
  6. Step 6: Final answer
    x = 315.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.