Home / 1,525.56-2,288.30-430.22

Finding the Fourth Proportional to 1,525.56, 2,288.30 and 430.22

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Solution

The fourth proportional to 1,525.56, 2,288.30 and 430.22 is: 645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.56 : 2,288.30 = 430.22 : x
  2. Step 2: Convert to fraction form
    1,525.56/2,288.30 = 430.22/x
  3. Step 3: Cross multiply
    1,525.56x = 2,288.30 × 430.22
  4. Step 4: Simplify right side
    1,525.56x = 984,472.43
  5. Step 5: Solve for x
    x = 984,472.43/1,525.56
  6. Step 6: Final answer
    x = 645.32

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1.5x scale

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.