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Finding the Fourth Proportional to 627.86, 942.24 and 465.05

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Solution

The fourth proportional to 627.86, 942.24 and 465.05 is: 697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.86 : 942.24 = 465.05 : x
  2. Step 2: Convert to fraction form
    627.86/942.24 = 465.05/x
  3. Step 3: Cross multiply
    627.86x = 942.24 × 465.05
  4. Step 4: Simplify right side
    627.86x = 438,188.71
  5. Step 5: Solve for x
    x = 438,188.71/627.86
  6. Step 6: Final answer
    x = 697.91

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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.