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Finding the Fourth Proportional to 603.61, 905.43 and 170.75

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Solution

The fourth proportional to 603.61, 905.43 and 170.75 is: 256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.61 : 905.43 = 170.75 : x
  2. Step 2: Convert to fraction form
    603.61/905.43 = 170.75/x
  3. Step 3: Cross multiply
    603.61x = 905.43 × 170.75
  4. Step 4: Simplify right side
    603.61x = 154,602.17
  5. Step 5: Solve for x
    x = 154,602.17/603.61
  6. Step 6: Final answer
    x = 256.13

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Double scale
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Similar ratio
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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.