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Finding the Fourth Proportional to 651, 976.61 and 446.88

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Solution

The fourth proportional to 651, 976.61 and 446.88 is: 670.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    651 : 976.61 = 446.88 : x
  2. Step 2: Convert to fraction form
    651/976.61 = 446.88/x
  3. Step 3: Cross multiply
    651x = 976.61 × 446.88
  4. Step 4: Simplify right side
    651x = 436,425.24
  5. Step 5: Solve for x
    x = 436,425.24/651
  6. Step 6: Final answer
    x = 670.39

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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.