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Finding the Fourth Proportional to 607.18, 836.45 and 482.80

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Solution

The fourth proportional to 607.18, 836.45 and 482.80 is: 665.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.18 : 836.45 = 482.80 : x
  2. Step 2: Convert to fraction form
    607.18/836.45 = 482.80/x
  3. Step 3: Cross multiply
    607.18x = 836.45 × 482.80
  4. Step 4: Simplify right side
    607.18x = 403,835.65
  5. Step 5: Solve for x
    x = 403,835.65/607.18
  6. Step 6: Final answer
    x = 665.10

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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.