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Finding the Fourth Proportional to 444.65, 613.66 and 258.20

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Solution

The fourth proportional to 444.65, 613.66 and 258.20 is: 356.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.65 : 613.66 = 258.20 : x
  2. Step 2: Convert to fraction form
    444.65/613.66 = 258.20/x
  3. Step 3: Cross multiply
    444.65x = 613.66 × 258.20
  4. Step 4: Simplify right side
    444.65x = 158,445.72
  5. Step 5: Solve for x
    x = 158,445.72/444.65
  6. Step 6: Final answer
    x = 356.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.