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Finding the Fourth Proportional to 651.16, 976.84 and 401.48

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Solution

The fourth proportional to 651.16, 976.84 and 401.48 is: 602.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.16 : 976.84 = 401.48 : x
  2. Step 2: Convert to fraction form
    651.16/976.84 = 401.48/x
  3. Step 3: Cross multiply
    651.16x = 976.84 × 401.48
  4. Step 4: Simplify right side
    651.16x = 392,181.72
  5. Step 5: Solve for x
    x = 392,181.72/651.16
  6. Step 6: Final answer
    x = 602.28

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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.