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Finding the Fourth Proportional to 356.66, 492.65 and 245.94

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Solution

The fourth proportional to 356.66, 492.65 and 245.94 is: 339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.66 : 492.65 = 245.94 : x
  2. Step 2: Convert to fraction form
    356.66/492.65 = 245.94/x
  3. Step 3: Cross multiply
    356.66x = 492.65 × 245.94
  4. Step 4: Simplify right side
    356.66x = 121,161.11
  5. Step 5: Solve for x
    x = 121,161.11/356.66
  6. Step 6: Final answer
    x = 339.72

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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.