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Finding the Fourth Proportional to 618.24, 926.48 and 309.66

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Solution

The fourth proportional to 618.24, 926.48 and 309.66 is: 464.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.24 : 926.48 = 309.66 : x
  2. Step 2: Convert to fraction form
    618.24/926.48 = 309.66/x
  3. Step 3: Cross multiply
    618.24x = 926.48 × 309.66
  4. Step 4: Simplify right side
    618.24x = 286,892.25
  5. Step 5: Solve for x
    x = 286,892.25/618.24
  6. Step 6: Final answer
    x = 464.05

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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.