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Finding the Fourth Proportional to 485.89, 666.88 and 444.17

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Solution

The fourth proportional to 485.89, 666.88 and 444.17 is: 609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485.89 : 666.88 = 444.17 : x
  2. Step 2: Convert to fraction form
    485.89/666.88 = 444.17/x
  3. Step 3: Cross multiply
    485.89x = 666.88 × 444.17
  4. Step 4: Simplify right side
    485.89x = 296,208.65
  5. Step 5: Solve for x
    x = 296,208.65/485.89
  6. Step 6: Final answer
    x = 609.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.