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Finding the Fourth Proportional to 253.18, 376.85 and 247.51

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Solution

The fourth proportional to 253.18, 376.85 and 247.51 is: 368.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.18 : 376.85 = 247.51 : x
  2. Step 2: Convert to fraction form
    253.18/376.85 = 247.51/x
  3. Step 3: Cross multiply
    253.18x = 376.85 × 247.51
  4. Step 4: Simplify right side
    253.18x = 93,274.14
  5. Step 5: Solve for x
    x = 93,274.14/253.18
  6. Step 6: Final answer
    x = 368.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.