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Finding the Fourth Proportional to 368.54, 551.91 and 259.82

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Solution

The fourth proportional to 368.54, 551.91 and 259.82 is: 389.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.54 : 551.91 = 259.82 : x
  2. Step 2: Convert to fraction form
    368.54/551.91 = 259.82/x
  3. Step 3: Cross multiply
    368.54x = 551.91 × 259.82
  4. Step 4: Simplify right side
    368.54x = 143,397.26
  5. Step 5: Solve for x
    x = 143,397.26/368.54
  6. Step 6: Final answer
    x = 389.10

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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.