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Finding the Fourth Proportional to 615.15, 848.94 and 353.25

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Solution

The fourth proportional to 615.15, 848.94 and 353.25 is: 487.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.15 : 848.94 = 353.25 : x
  2. Step 2: Convert to fraction form
    615.15/848.94 = 353.25/x
  3. Step 3: Cross multiply
    615.15x = 848.94 × 353.25
  4. Step 4: Simplify right side
    615.15x = 299,888.06
  5. Step 5: Solve for x
    x = 299,888.06/615.15
  6. Step 6: Final answer
    x = 487.50

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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.