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Finding the Fourth Proportional to 650.77, 976.65 and 521.91

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Solution

The fourth proportional to 650.77, 976.65 and 521.91 is: 783.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.77 : 976.65 = 521.91 : x
  2. Step 2: Convert to fraction form
    650.77/976.65 = 521.91/x
  3. Step 3: Cross multiply
    650.77x = 976.65 × 521.91
  4. Step 4: Simplify right side
    650.77x = 509,721.44
  5. Step 5: Solve for x
    x = 509,721.44/650.77
  6. Step 6: Final answer
    x = 783.26

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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.