Home / 1,155.46-1,733.30-425.05

Finding the Fourth Proportional to 1,155.46, 1,733.30 and 425.05

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Solution

The fourth proportional to 1,155.46, 1,733.30 and 425.05 is: 637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.46 : 1,733.30 = 425.05 : x
  2. Step 2: Convert to fraction form
    1,155.46/1,733.30 = 425.05/x
  3. Step 3: Cross multiply
    1,155.46x = 1,733.30 × 425.05
  4. Step 4: Simplify right side
    1,155.46x = 736,739.17
  5. Step 5: Solve for x
    x = 736,739.17/1,155.46
  6. Step 6: Final answer
    x = 637.62

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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.