Home / 1,048.20-1,571.76-317.58

Finding the Fourth Proportional to 1,048.20, 1,571.76 and 317.58

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Solution

The fourth proportional to 1,048.20, 1,571.76 and 317.58 is: 476.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.20 : 1,571.76 = 317.58 : x
  2. Step 2: Convert to fraction form
    1,048.20/1,571.76 = 317.58/x
  3. Step 3: Cross multiply
    1,048.20x = 1,571.76 × 317.58
  4. Step 4: Simplify right side
    1,048.20x = 499,159.54
  5. Step 5: Solve for x
    x = 499,159.54/1,048.20
  6. Step 6: Final answer
    x = 476.21

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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.