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Finding the Fourth Proportional to 618.19, 926.28 and 370.90

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Solution

The fourth proportional to 618.19, 926.28 and 370.90 is: 555.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.19 : 926.28 = 370.90 : x
  2. Step 2: Convert to fraction form
    618.19/926.28 = 370.90/x
  3. Step 3: Cross multiply
    618.19x = 926.28 × 370.90
  4. Step 4: Simplify right side
    618.19x = 343,557.25
  5. Step 5: Solve for x
    x = 343,557.25/618.19
  6. Step 6: Final answer
    x = 555.75

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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.