Home / 1,315.24-1,972.95-341.35

Finding the Fourth Proportional to 1,315.24, 1,972.95 and 341.35

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Solution

The fourth proportional to 1,315.24, 1,972.95 and 341.35 is: 512.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.24 : 1,972.95 = 341.35 : x
  2. Step 2: Convert to fraction form
    1,315.24/1,972.95 = 341.35/x
  3. Step 3: Cross multiply
    1,315.24x = 1,972.95 × 341.35
  4. Step 4: Simplify right side
    1,315.24x = 673,466.48
  5. Step 5: Solve for x
    x = 673,466.48/1,315.24
  6. Step 6: Final answer
    x = 512.05

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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.