Home / 1,315.17-1,972.80-341.37

Finding the Fourth Proportional to 1,315.17, 1,972.80 and 341.37

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Solution

The fourth proportional to 1,315.17, 1,972.80 and 341.37 is: 512.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.17 : 1,972.80 = 341.37 : x
  2. Step 2: Convert to fraction form
    1,315.17/1,972.80 = 341.37/x
  3. Step 3: Cross multiply
    1,315.17x = 1,972.80 × 341.37
  4. Step 4: Simplify right side
    1,315.17x = 673,454.74
  5. Step 5: Solve for x
    x = 673,454.74/1,315.17
  6. Step 6: Final answer
    x = 512.07

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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.