Home / 1,045.45-1,568.18-315.03

Finding the Fourth Proportional to 1,045.45, 1,568.18 and 315.03

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Solution

The fourth proportional to 1,045.45, 1,568.18 and 315.03 is: 472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.45 : 1,568.18 = 315.03 : x
  2. Step 2: Convert to fraction form
    1,045.45/1,568.18 = 315.03/x
  3. Step 3: Cross multiply
    1,045.45x = 1,568.18 × 315.03
  4. Step 4: Simplify right side
    1,045.45x = 494,023.75
  5. Step 5: Solve for x
    x = 494,023.75/1,045.45
  6. Step 6: Final answer
    x = 472.55

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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.