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Finding the Fourth Proportional to 614.78, 848.48 and 352.79

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Solution

The fourth proportional to 614.78, 848.48 and 352.79 is: 486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.78 : 848.48 = 352.79 : x
  2. Step 2: Convert to fraction form
    614.78/848.48 = 352.79/x
  3. Step 3: Cross multiply
    614.78x = 848.48 × 352.79
  4. Step 4: Simplify right side
    614.78x = 299,329.25
  5. Step 5: Solve for x
    x = 299,329.25/614.78
  6. Step 6: Final answer
    x = 486.89

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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.