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Finding the Fourth Proportional to 376.68, 520.02 and 260.40

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Solution

The fourth proportional to 376.68, 520.02 and 260.40 is: 359.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.68 : 520.02 = 260.40 : x
  2. Step 2: Convert to fraction form
    376.68/520.02 = 260.40/x
  3. Step 3: Cross multiply
    376.68x = 520.02 × 260.40
  4. Step 4: Simplify right side
    376.68x = 135,413.21
  5. Step 5: Solve for x
    x = 135,413.21/376.68
  6. Step 6: Final answer
    x = 359.49

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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.