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Finding the Fourth Proportional to 609.46, 840.23 and 526.39

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Solution

The fourth proportional to 609.46, 840.23 and 526.39 is: 725.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.46 : 840.23 = 526.39 : x
  2. Step 2: Convert to fraction form
    609.46/840.23 = 526.39/x
  3. Step 3: Cross multiply
    609.46x = 840.23 × 526.39
  4. Step 4: Simplify right side
    609.46x = 442,281.84
  5. Step 5: Solve for x
    x = 442,281.84/609.46
  6. Step 6: Final answer
    x = 725.70

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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.