Home / 1,004.20-1,506.49-355.39

Finding the Fourth Proportional to 1,004.20, 1,506.49 and 355.39

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Solution

The fourth proportional to 1,004.20, 1,506.49 and 355.39 is: 533.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.20 : 1,506.49 = 355.39 : x
  2. Step 2: Convert to fraction form
    1,004.20/1,506.49 = 355.39/x
  3. Step 3: Cross multiply
    1,004.20x = 1,506.49 × 355.39
  4. Step 4: Simplify right side
    1,004.20x = 535,386.83
  5. Step 5: Solve for x
    x = 535,386.83/1,004.20
  6. Step 6: Final answer
    x = 533.15

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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.