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Finding the Fourth Proportional to 457.26, 684.81 and 376.26

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Solution

The fourth proportional to 457.26, 684.81 and 376.26 is: 563.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.26 : 684.81 = 376.26 : x
  2. Step 2: Convert to fraction form
    457.26/684.81 = 376.26/x
  3. Step 3: Cross multiply
    457.26x = 684.81 × 376.26
  4. Step 4: Simplify right side
    457.26x = 257,666.61
  5. Step 5: Solve for x
    x = 257,666.61/457.26
  6. Step 6: Final answer
    x = 563.50

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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.