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Finding the Fourth Proportional to 365.37, 502.93 and 318.66

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Solution

The fourth proportional to 365.37, 502.93 and 318.66 is: 438.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.37 : 502.93 = 318.66 : x
  2. Step 2: Convert to fraction form
    365.37/502.93 = 318.66/x
  3. Step 3: Cross multiply
    365.37x = 502.93 × 318.66
  4. Step 4: Simplify right side
    365.37x = 160,261.62
  5. Step 5: Solve for x
    x = 160,261.62/365.37
  6. Step 6: Final answer
    x = 438.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.