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Finding the Fourth Proportional to 336.40, 463.81 and 253.15

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Solution

The fourth proportional to 336.40, 463.81 and 253.15 is: 349.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.40 : 463.81 = 253.15 : x
  2. Step 2: Convert to fraction form
    336.40/463.81 = 253.15/x
  3. Step 3: Cross multiply
    336.40x = 463.81 × 253.15
  4. Step 4: Simplify right side
    336.40x = 117,409.92
  5. Step 5: Solve for x
    x = 117,409.92/336.40
  6. Step 6: Final answer
    x = 349.02

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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.