Home / 1,353.58-2,030.60-487.69

Finding the Fourth Proportional to 1,353.58, 2,030.60 and 487.69

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Solution

The fourth proportional to 1,353.58, 2,030.60 and 487.69 is: 731.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.58 : 2,030.60 = 487.69 : x
  2. Step 2: Convert to fraction form
    1,353.58/2,030.60 = 487.69/x
  3. Step 3: Cross multiply
    1,353.58x = 2,030.60 × 487.69
  4. Step 4: Simplify right side
    1,353.58x = 990,299.46
  5. Step 5: Solve for x
    x = 990,299.46/1,353.58
  6. Step 6: Final answer
    x = 731.62

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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.