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Finding the Fourth Proportional to 253.23, 348.84 and 228.63

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Solution

The fourth proportional to 253.23, 348.84 and 228.63 is: 314.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.23 : 348.84 = 228.63 : x
  2. Step 2: Convert to fraction form
    253.23/348.84 = 228.63/x
  3. Step 3: Cross multiply
    253.23x = 348.84 × 228.63
  4. Step 4: Simplify right side
    253.23x = 79,755.29
  5. Step 5: Solve for x
    x = 79,755.29/253.23
  6. Step 6: Final answer
    x = 314.95

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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.