Home / 1,048.50-1,572.93-318.15

Finding the Fourth Proportional to 1,048.50, 1,572.93 and 318.15

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Solution

The fourth proportional to 1,048.50, 1,572.93 and 318.15 is: 477.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.50 : 1,572.93 = 318.15 : x
  2. Step 2: Convert to fraction form
    1,048.50/1,572.93 = 318.15/x
  3. Step 3: Cross multiply
    1,048.50x = 1,572.93 × 318.15
  4. Step 4: Simplify right side
    1,048.50x = 500,427.68
  5. Step 5: Solve for x
    x = 500,427.68/1,048.50
  6. Step 6: Final answer
    x = 477.28

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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.