Home / 1,525.75-2,288.42-430.20

Finding the Fourth Proportional to 1,525.75, 2,288.42 and 430.20

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Solution

The fourth proportional to 1,525.75, 2,288.42 and 430.20 is: 645.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.75 : 2,288.42 = 430.20 : x
  2. Step 2: Convert to fraction form
    1,525.75/2,288.42 = 430.20/x
  3. Step 3: Cross multiply
    1,525.75x = 2,288.42 × 430.20
  4. Step 4: Simplify right side
    1,525.75x = 984,477.75
  5. Step 5: Solve for x
    x = 984,477.75/1,525.75
  6. Step 6: Final answer
    x = 645.24

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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.