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Finding the Fourth Proportional to 609.18, 838.98 and 526.26

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Solution

The fourth proportional to 609.18, 838.98 and 526.26 is: 724.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.18 : 838.98 = 526.26 : x
  2. Step 2: Convert to fraction form
    609.18/838.98 = 526.26/x
  3. Step 3: Cross multiply
    609.18x = 838.98 × 526.26
  4. Step 4: Simplify right side
    609.18x = 441,521.61
  5. Step 5: Solve for x
    x = 441,521.61/609.18
  6. Step 6: Final answer
    x = 724.78

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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.