Home / 1,004.20-1,506.47-456.42

Finding the Fourth Proportional to 1,004.20, 1,506.47 and 456.42

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Solution

The fourth proportional to 1,004.20, 1,506.47 and 456.42 is: 684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.20 : 1,506.47 = 456.42 : x
  2. Step 2: Convert to fraction form
    1,004.20/1,506.47 = 456.42/x
  3. Step 3: Cross multiply
    1,004.20x = 1,506.47 × 456.42
  4. Step 4: Simplify right side
    1,004.20x = 687,585.25
  5. Step 5: Solve for x
    x = 687,585.25/1,004.20
  6. Step 6: Final answer
    x = 684.71

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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.