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Finding the Fourth Proportional to 609.32, 909.58 and 554.65

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Solution

The fourth proportional to 609.32, 909.58 and 554.65 is: 827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.32 : 909.58 = 554.65 : x
  2. Step 2: Convert to fraction form
    609.32/909.58 = 554.65/x
  3. Step 3: Cross multiply
    609.32x = 909.58 × 554.65
  4. Step 4: Simplify right side
    609.32x = 504,495.93
  5. Step 5: Solve for x
    x = 504,495.93/609.32
  6. Step 6: Final answer
    x = 827.96

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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.