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Finding the Fourth Proportional to 356.87, 492.76 and 268.48

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Solution

The fourth proportional to 356.87, 492.76 and 268.48 is: 370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.87 : 492.76 = 268.48 : x
  2. Step 2: Convert to fraction form
    356.87/492.76 = 268.48/x
  3. Step 3: Cross multiply
    356.87x = 492.76 × 268.48
  4. Step 4: Simplify right side
    356.87x = 132,294.30
  5. Step 5: Solve for x
    x = 132,294.30/356.87
  6. Step 6: Final answer
    x = 370.70

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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.