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Finding the Fourth Proportional to 413.04, 614.70 and 397.68

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Solution

The fourth proportional to 413.04, 614.70 and 397.68 is: 591.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.04 : 614.70 = 397.68 : x
  2. Step 2: Convert to fraction form
    413.04/614.70 = 397.68/x
  3. Step 3: Cross multiply
    413.04x = 614.70 × 397.68
  4. Step 4: Simplify right side
    413.04x = 244,453.90
  5. Step 5: Solve for x
    x = 244,453.90/413.04
  6. Step 6: Final answer
    x = 591.84

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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.