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Finding the Fourth Proportional to 336.19, 504.48 and 143.81

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Solution

The fourth proportional to 336.19, 504.48 and 143.81 is: 215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.19 : 504.48 = 143.81 : x
  2. Step 2: Convert to fraction form
    336.19/504.48 = 143.81/x
  3. Step 3: Cross multiply
    336.19x = 504.48 × 143.81
  4. Step 4: Simplify right side
    336.19x = 72,551.07
  5. Step 5: Solve for x
    x = 72,551.07/336.19
  6. Step 6: Final answer
    x = 215.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.