Home / 926.03-1,389.14-378.12

Finding the Fourth Proportional to 926.03, 1,389.14 and 378.12

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Solution

The fourth proportional to 926.03, 1,389.14 and 378.12 is: 567.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.03 : 1,389.14 = 378.12 : x
  2. Step 2: Convert to fraction form
    926.03/1,389.14 = 378.12/x
  3. Step 3: Cross multiply
    926.03x = 1,389.14 × 378.12
  4. Step 4: Simplify right side
    926.03x = 525,259.73
  5. Step 5: Solve for x
    x = 525,259.73/926.03
  6. Step 6: Final answer
    x = 567.22

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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.