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Finding the Fourth Proportional to 618.66, 926.91 and 293.58

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Solution

The fourth proportional to 618.66, 926.91 and 293.58 is: 439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.66 : 926.91 = 293.58 : x
  2. Step 2: Convert to fraction form
    618.66/926.91 = 293.58/x
  3. Step 3: Cross multiply
    618.66x = 926.91 × 293.58
  4. Step 4: Simplify right side
    618.66x = 272,122.24
  5. Step 5: Solve for x
    x = 272,122.24/618.66
  6. Step 6: Final answer
    x = 439.86

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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.