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Finding the Fourth Proportional to 333.44, 498.14 and 278.76

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Solution

The fourth proportional to 333.44, 498.14 and 278.76 is: 416.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.44 : 498.14 = 278.76 : x
  2. Step 2: Convert to fraction form
    333.44/498.14 = 278.76/x
  3. Step 3: Cross multiply
    333.44x = 498.14 × 278.76
  4. Step 4: Simplify right side
    333.44x = 138,861.51
  5. Step 5: Solve for x
    x = 138,861.51/333.44
  6. Step 6: Final answer
    x = 416.45

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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.