Home / 1,526.09-2,289.22-430.55

Finding the Fourth Proportional to 1,526.09, 2,289.22 and 430.55

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Solution

The fourth proportional to 1,526.09, 2,289.22 and 430.55 is: 645.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.09 : 2,289.22 = 430.55 : x
  2. Step 2: Convert to fraction form
    1,526.09/2,289.22 = 430.55/x
  3. Step 3: Cross multiply
    1,526.09x = 2,289.22 × 430.55
  4. Step 4: Simplify right side
    1,526.09x = 985,611.15
  5. Step 5: Solve for x
    x = 985,611.15/1,526.09
  6. Step 6: Final answer
    x = 645.84

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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.