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Finding the Fourth Proportional to 368.76, 552.64 and 203.98

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Solution

The fourth proportional to 368.76, 552.64 and 203.98 is: 305.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.76 : 552.64 = 203.98 : x
  2. Step 2: Convert to fraction form
    368.76/552.64 = 203.98/x
  3. Step 3: Cross multiply
    368.76x = 552.64 × 203.98
  4. Step 4: Simplify right side
    368.76x = 112,727.51
  5. Step 5: Solve for x
    x = 112,727.51/368.76
  6. Step 6: Final answer
    x = 305.69

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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.