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Finding the Fourth Proportional to 615.06, 848.78 and 353.07

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Solution

The fourth proportional to 615.06, 848.78 and 353.07 is: 487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.06 : 848.78 = 353.07 : x
  2. Step 2: Convert to fraction form
    615.06/848.78 = 353.07/x
  3. Step 3: Cross multiply
    615.06x = 848.78 × 353.07
  4. Step 4: Simplify right side
    615.06x = 299,676.99
  5. Step 5: Solve for x
    x = 299,676.99/615.06
  6. Step 6: Final answer
    x = 487.23

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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.