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Finding the Fourth Proportional to 1,604.28, 2,406.21 and 508.65

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Solution

The fourth proportional to 1,604.28, 2,406.21 and 508.65 is: 762.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,604.28 : 2,406.21 = 508.65 : x
  2. Step 2: Convert to fraction form
    1,604.28/2,406.21 = 508.65/x
  3. Step 3: Cross multiply
    1,604.28x = 2,406.21 × 508.65
  4. Step 4: Simplify right side
    1,604.28x = 1,223,918.72
  5. Step 5: Solve for x
    x = 1,223,918.72/1,604.28
  6. Step 6: Final answer
    x = 762.91

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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.