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Finding the Fourth Proportional to 356.36, 492.14 and 245.63

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Solution

The fourth proportional to 356.36, 492.14 and 245.63 is: 339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.36 : 492.14 = 245.63 : x
  2. Step 2: Convert to fraction form
    356.36/492.14 = 245.63/x
  3. Step 3: Cross multiply
    356.36x = 492.14 × 245.63
  4. Step 4: Simplify right side
    356.36x = 120,886.19
  5. Step 5: Solve for x
    x = 120,886.19/356.36
  6. Step 6: Final answer
    x = 339.23

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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.