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Finding the Fourth Proportional to 336.96, 502.20 and 336.42

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Solution

The fourth proportional to 336.96, 502.20 and 336.42 is: 501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.96 : 502.20 = 336.42 : x
  2. Step 2: Convert to fraction form
    336.96/502.20 = 336.42/x
  3. Step 3: Cross multiply
    336.96x = 502.20 × 336.42
  4. Step 4: Simplify right side
    336.96x = 168,950.12
  5. Step 5: Solve for x
    x = 168,950.12/336.96
  6. Step 6: Final answer
    x = 501.40

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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.