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Finding the Fourth Proportional to 253.02, 348.27 and 211.11

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Solution

The fourth proportional to 253.02, 348.27 and 211.11 is: 290.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.02 : 348.27 = 211.11 : x
  2. Step 2: Convert to fraction form
    253.02/348.27 = 211.11/x
  3. Step 3: Cross multiply
    253.02x = 348.27 × 211.11
  4. Step 4: Simplify right side
    253.02x = 73,521.18
  5. Step 5: Solve for x
    x = 73,521.18/253.02
  6. Step 6: Final answer
    x = 290.57

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