Home / 1,128.04-1,692.23-306.34

Finding the Fourth Proportional to 1,128.04, 1,692.23 and 306.34

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Solution

The fourth proportional to 1,128.04, 1,692.23 and 306.34 is: 459.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128.04 : 1,692.23 = 306.34 : x
  2. Step 2: Convert to fraction form
    1,128.04/1,692.23 = 306.34/x
  3. Step 3: Cross multiply
    1,128.04x = 1,692.23 × 306.34
  4. Step 4: Simplify right side
    1,128.04x = 518,397.74
  5. Step 5: Solve for x
    x = 518,397.74/1,128.04
  6. Step 6: Final answer
    x = 459.56

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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.