Home / 1,030.20-1,545.48-299.80

Finding the Fourth Proportional to 1,030.20, 1,545.48 and 299.80

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Solution

The fourth proportional to 1,030.20, 1,545.48 and 299.80 is: 449.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.20 : 1,545.48 = 299.80 : x
  2. Step 2: Convert to fraction form
    1,030.20/1,545.48 = 299.80/x
  3. Step 3: Cross multiply
    1,030.20x = 1,545.48 × 299.80
  4. Step 4: Simplify right side
    1,030.20x = 463,334.90
  5. Step 5: Solve for x
    x = 463,334.90/1,030.20
  6. Step 6: Final answer
    x = 449.75

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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.