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Finding the Fourth Proportional to 337.16, 502.40 and 321.67

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Solution

The fourth proportional to 337.16, 502.40 and 321.67 is: 479.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.16 : 502.40 = 321.67 : x
  2. Step 2: Convert to fraction form
    337.16/502.40 = 321.67/x
  3. Step 3: Cross multiply
    337.16x = 502.40 × 321.67
  4. Step 4: Simplify right side
    337.16x = 161,608.44
  5. Step 5: Solve for x
    x = 161,608.44/337.16
  6. Step 6: Final answer
    x = 479.32

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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.