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Finding the Fourth Proportional to 336.09, 500.59 and 318.75

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Solution

The fourth proportional to 336.09, 500.59 and 318.75 is: 474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.09 : 500.59 = 318.75 : x
  2. Step 2: Convert to fraction form
    336.09/500.59 = 318.75/x
  3. Step 3: Cross multiply
    336.09x = 500.59 × 318.75
  4. Step 4: Simplify right side
    336.09x = 159,563.06
  5. Step 5: Solve for x
    x = 159,563.06/336.09
  6. Step 6: Final answer
    x = 474.76

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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.