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Finding the Fourth Proportional to 651, 974.07 and 406.38

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Solution

The fourth proportional to 651, 974.07 and 406.38 is: 608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    651 : 974.07 = 406.38 : x
  2. Step 2: Convert to fraction form
    651/974.07 = 406.38/x
  3. Step 3: Cross multiply
    651x = 974.07 × 406.38
  4. Step 4: Simplify right side
    651x = 395,842.57
  5. Step 5: Solve for x
    x = 395,842.57/651
  6. Step 6: Final answer
    x = 608.05

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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.