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Finding the Fourth Proportional to 492.99, 679.50 and 382.02

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Solution

The fourth proportional to 492.99, 679.50 and 382.02 is: 526.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.99 : 679.50 = 382.02 : x
  2. Step 2: Convert to fraction form
    492.99/679.50 = 382.02/x
  3. Step 3: Cross multiply
    492.99x = 679.50 × 382.02
  4. Step 4: Simplify right side
    492.99x = 259,582.59
  5. Step 5: Solve for x
    x = 259,582.59/492.99
  6. Step 6: Final answer
    x = 526.55

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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.