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Finding the Fourth Proportional to 650.90, 976.68 and 497.81

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Solution

The fourth proportional to 650.90, 976.68 and 497.81 is: 746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.90 : 976.68 = 497.81 : x
  2. Step 2: Convert to fraction form
    650.90/976.68 = 497.81/x
  3. Step 3: Cross multiply
    650.90x = 976.68 × 497.81
  4. Step 4: Simplify right side
    650.90x = 486,203.51
  5. Step 5: Solve for x
    x = 486,203.51/650.90
  6. Step 6: Final answer
    x = 746.97

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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.