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Finding the Fourth Proportional to 601.78, 902.82 and 190.90

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Solution

The fourth proportional to 601.78, 902.82 and 190.90 is: 286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.78 : 902.82 = 190.90 : x
  2. Step 2: Convert to fraction form
    601.78/902.82 = 190.90/x
  3. Step 3: Cross multiply
    601.78x = 902.82 × 190.90
  4. Step 4: Simplify right side
    601.78x = 172,348.34
  5. Step 5: Solve for x
    x = 172,348.34/601.78
  6. Step 6: Final answer
    x = 286.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.