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Finding the Fourth Proportional to 676.33, 933.15 and 440.31

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Solution

The fourth proportional to 676.33, 933.15 and 440.31 is: 607.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.33 : 933.15 = 440.31 : x
  2. Step 2: Convert to fraction form
    676.33/933.15 = 440.31/x
  3. Step 3: Cross multiply
    676.33x = 933.15 × 440.31
  4. Step 4: Simplify right side
    676.33x = 410,875.28
  5. Step 5: Solve for x
    x = 410,875.28/676.33
  6. Step 6: Final answer
    x = 607.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.