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Finding the Fourth Proportional to 368.98, 553.64 and 231.94

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Solution

The fourth proportional to 368.98, 553.64 and 231.94 is: 348.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.98 : 553.64 = 231.94 : x
  2. Step 2: Convert to fraction form
    368.98/553.64 = 231.94/x
  3. Step 3: Cross multiply
    368.98x = 553.64 × 231.94
  4. Step 4: Simplify right side
    368.98x = 128,411.26
  5. Step 5: Solve for x
    x = 128,411.26/368.98
  6. Step 6: Final answer
    x = 348.02

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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.