Home / 1,526.31-2,289.15-430.38

Finding the Fourth Proportional to 1,526.31, 2,289.15 and 430.38

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Solution

The fourth proportional to 1,526.31, 2,289.15 and 430.38 is: 645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.31 : 2,289.15 = 430.38 : x
  2. Step 2: Convert to fraction form
    1,526.31/2,289.15 = 430.38/x
  3. Step 3: Cross multiply
    1,526.31x = 2,289.15 × 430.38
  4. Step 4: Simplify right side
    1,526.31x = 985,204.38
  5. Step 5: Solve for x
    x = 985,204.38/1,526.31
  6. Step 6: Final answer
    x = 645.48

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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.