Home / 1,019.30-1,529.20-403.04

Finding the Fourth Proportional to 1,019.30, 1,529.20 and 403.04

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Solution

The fourth proportional to 1,019.30, 1,529.20 and 403.04 is: 604.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,019.30 : 1,529.20 = 403.04 : x
  2. Step 2: Convert to fraction form
    1,019.30/1,529.20 = 403.04/x
  3. Step 3: Cross multiply
    1,019.30x = 1,529.20 × 403.04
  4. Step 4: Simplify right side
    1,019.30x = 616,328.77
  5. Step 5: Solve for x
    x = 616,328.77/1,019.30
  6. Step 6: Final answer
    x = 604.66

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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.