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Finding the Fourth Proportional to 607.98, 836.94 and 528.20

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Solution

The fourth proportional to 607.98, 836.94 and 528.20 is: 727.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.98 : 836.94 = 528.20 : x
  2. Step 2: Convert to fraction form
    607.98/836.94 = 528.20/x
  3. Step 3: Cross multiply
    607.98x = 836.94 × 528.20
  4. Step 4: Simplify right side
    607.98x = 442,071.71
  5. Step 5: Solve for x
    x = 442,071.71/607.98
  6. Step 6: Final answer
    x = 727.12

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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.