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Finding the Fourth Proportional to 623.66, 860.68 and 413.46

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Solution

The fourth proportional to 623.66, 860.68 and 413.46 is: 570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.66 : 860.68 = 413.46 : x
  2. Step 2: Convert to fraction form
    623.66/860.68 = 413.46/x
  3. Step 3: Cross multiply
    623.66x = 860.68 × 413.46
  4. Step 4: Simplify right side
    623.66x = 355,856.75
  5. Step 5: Solve for x
    x = 355,856.75/623.66
  6. Step 6: Final answer
    x = 570.59

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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.