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Finding the Fourth Proportional to 576.10, 860.50 and 413.70

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Solution

The fourth proportional to 576.10, 860.50 and 413.70 is: 617.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.10 : 860.50 = 413.70 : x
  2. Step 2: Convert to fraction form
    576.10/860.50 = 413.70/x
  3. Step 3: Cross multiply
    576.10x = 860.50 × 413.70
  4. Step 4: Simplify right side
    576.10x = 355,988.85
  5. Step 5: Solve for x
    x = 355,988.85/576.10
  6. Step 6: Final answer
    x = 617.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.