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Finding the Fourth Proportional to 368.51, 549.81 and 329.56

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Solution

The fourth proportional to 368.51, 549.81 and 329.56 is: 491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.51 : 549.81 = 329.56 : x
  2. Step 2: Convert to fraction form
    368.51/549.81 = 329.56/x
  3. Step 3: Cross multiply
    368.51x = 549.81 × 329.56
  4. Step 4: Simplify right side
    368.51x = 181,195.38
  5. Step 5: Solve for x
    x = 181,195.38/368.51
  6. Step 6: Final answer
    x = 491.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.