Home / 1,030.37-1,545.40-380.96

Finding the Fourth Proportional to 1,030.37, 1,545.40 and 380.96

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Solution

The fourth proportional to 1,030.37, 1,545.40 and 380.96 is: 571.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030.37 : 1,545.40 = 380.96 : x
  2. Step 2: Convert to fraction form
    1,030.37/1,545.40 = 380.96/x
  3. Step 3: Cross multiply
    1,030.37x = 1,545.40 × 380.96
  4. Step 4: Simplify right side
    1,030.37x = 588,726.90
  5. Step 5: Solve for x
    x = 588,726.90/1,030.37
  6. Step 6: Final answer
    x = 571.37

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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.