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Finding the Fourth Proportional to 527.27, 786.26 and 489.65

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Solution

The fourth proportional to 527.27, 786.26 and 489.65 is: 730.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.27 : 786.26 = 489.65 : x
  2. Step 2: Convert to fraction form
    527.27/786.26 = 489.65/x
  3. Step 3: Cross multiply
    527.27x = 786.26 × 489.65
  4. Step 4: Simplify right side
    527.27x = 384,989.50
  5. Step 5: Solve for x
    x = 384,989.50/527.27
  6. Step 6: Final answer
    x = 730.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.