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Finding the Fourth Proportional to 336.76, 502.78 and 316.16

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Solution

The fourth proportional to 336.76, 502.78 and 316.16 is: 472.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.76 : 502.78 = 316.16 : x
  2. Step 2: Convert to fraction form
    336.76/502.78 = 316.16/x
  3. Step 3: Cross multiply
    336.76x = 502.78 × 316.16
  4. Step 4: Simplify right side
    336.76x = 158,958.92
  5. Step 5: Solve for x
    x = 158,958.92/336.76
  6. Step 6: Final answer
    x = 472.02

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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.