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Finding the Fourth Proportional to 650.65, 976.47 and 477.78

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Solution

The fourth proportional to 650.65, 976.47 and 477.78 is: 717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.65 : 976.47 = 477.78 : x
  2. Step 2: Convert to fraction form
    650.65/976.47 = 477.78/x
  3. Step 3: Cross multiply
    650.65x = 976.47 × 477.78
  4. Step 4: Simplify right side
    650.65x = 466,537.84
  5. Step 5: Solve for x
    x = 466,537.84/650.65
  6. Step 6: Final answer
    x = 717.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.