Home / 1,526.15-2,289.31-430.60

Finding the Fourth Proportional to 1,526.15, 2,289.31 and 430.60

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Solution

The fourth proportional to 1,526.15, 2,289.31 and 430.60 is: 645.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,526.15 : 2,289.31 = 430.60 : x
  2. Step 2: Convert to fraction form
    1,526.15/2,289.31 = 430.60/x
  3. Step 3: Cross multiply
    1,526.15x = 2,289.31 × 430.60
  4. Step 4: Simplify right side
    1,526.15x = 985,776.89
  5. Step 5: Solve for x
    x = 985,776.89/1,526.15
  6. Step 6: Final answer
    x = 645.92

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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.