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Finding the Fourth Proportional to 651.09, 976.64 and 266.25

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Solution

The fourth proportional to 651.09, 976.64 and 266.25 is: 399.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.09 : 976.64 = 266.25 : x
  2. Step 2: Convert to fraction form
    651.09/976.64 = 266.25/x
  3. Step 3: Cross multiply
    651.09x = 976.64 × 266.25
  4. Step 4: Simplify right side
    651.09x = 260,029.07
  5. Step 5: Solve for x
    x = 260,029.07/651.09
  6. Step 6: Final answer
    x = 399.38

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Double scale
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Similar ratio
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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.