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Finding the Fourth Proportional to 356.79, 492.45 and 246.42

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Solution

The fourth proportional to 356.79, 492.45 and 246.42 is: 340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.79 : 492.45 = 246.42 : x
  2. Step 2: Convert to fraction form
    356.79/492.45 = 246.42/x
  3. Step 3: Cross multiply
    356.79x = 492.45 × 246.42
  4. Step 4: Simplify right side
    356.79x = 121,349.53
  5. Step 5: Solve for x
    x = 121,349.53/356.79
  6. Step 6: Final answer
    x = 340.11

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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.