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Finding the Fourth Proportional to 653.14, 901.34 and 354.39

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Solution

The fourth proportional to 653.14, 901.34 and 354.39 is: 489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.14 : 901.34 = 354.39 : x
  2. Step 2: Convert to fraction form
    653.14/901.34 = 354.39/x
  3. Step 3: Cross multiply
    653.14x = 901.34 × 354.39
  4. Step 4: Simplify right side
    653.14x = 319,427.25
  5. Step 5: Solve for x
    x = 319,427.25/653.14
  6. Step 6: Final answer
    x = 489.06

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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.