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Finding the Fourth Proportional to 356.95, 492.51 and 225.91

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Solution

The fourth proportional to 356.95, 492.51 and 225.91 is: 311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.95 : 492.51 = 225.91 : x
  2. Step 2: Convert to fraction form
    356.95/492.51 = 225.91/x
  3. Step 3: Cross multiply
    356.95x = 492.51 × 225.91
  4. Step 4: Simplify right side
    356.95x = 111,262.93
  5. Step 5: Solve for x
    x = 111,262.93/356.95
  6. Step 6: Final answer
    x = 311.70

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.