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Finding the Fourth Proportional to 609.52, 841.04 and 388.52

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Solution

The fourth proportional to 609.52, 841.04 and 388.52 is: 536.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.52 : 841.04 = 388.52 : x
  2. Step 2: Convert to fraction form
    609.52/841.04 = 388.52/x
  3. Step 3: Cross multiply
    609.52x = 841.04 × 388.52
  4. Step 4: Simplify right side
    609.52x = 326,760.86
  5. Step 5: Solve for x
    x = 326,760.86/609.52
  6. Step 6: Final answer
    x = 536.10

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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.