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Finding the Fourth Proportional to 336.42, 463.95 and 289.14

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Solution

The fourth proportional to 336.42, 463.95 and 289.14 is: 398.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.42 : 463.95 = 289.14 : x
  2. Step 2: Convert to fraction form
    336.42/463.95 = 289.14/x
  3. Step 3: Cross multiply
    336.42x = 463.95 × 289.14
  4. Step 4: Simplify right side
    336.42x = 134,145.06
  5. Step 5: Solve for x
    x = 134,145.06/336.42
  6. Step 6: Final answer
    x = 398.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.