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Finding the Fourth Proportional to 615.58, 849.54 and 353.60

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Solution

The fourth proportional to 615.58, 849.54 and 353.60 is: 487.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.58 : 849.54 = 353.60 : x
  2. Step 2: Convert to fraction form
    615.58/849.54 = 353.60/x
  3. Step 3: Cross multiply
    615.58x = 849.54 × 353.60
  4. Step 4: Simplify right side
    615.58x = 300,397.34
  5. Step 5: Solve for x
    x = 300,397.34/615.58
  6. Step 6: Final answer
    x = 487.99

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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.