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Finding the Fourth Proportional to 609.01, 841.38 and 469.69

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Solution

The fourth proportional to 609.01, 841.38 and 469.69 is: 648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.01 : 841.38 = 469.69 : x
  2. Step 2: Convert to fraction form
    609.01/841.38 = 469.69/x
  3. Step 3: Cross multiply
    609.01x = 841.38 × 469.69
  4. Step 4: Simplify right side
    609.01x = 395,187.77
  5. Step 5: Solve for x
    x = 395,187.77/609.01
  6. Step 6: Final answer
    x = 648.90

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1.5x scale

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.