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Finding the Fourth Proportional to 368, 551.56 and 162.48

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Solution

The fourth proportional to 368, 551.56 and 162.48 is: 243.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    368 : 551.56 = 162.48 : x
  2. Step 2: Convert to fraction form
    368/551.56 = 162.48/x
  3. Step 3: Cross multiply
    368x = 551.56 × 162.48
  4. Step 4: Simplify right side
    368x = 89,617.47
  5. Step 5: Solve for x
    x = 89,617.47/368
  6. Step 6: Final answer
    x = 243.53

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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.