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Finding the Fourth Proportional to 603.64, 905.61 and 170.79

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Solution

The fourth proportional to 603.64, 905.61 and 170.79 is: 256.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.64 : 905.61 = 170.79 : x
  2. Step 2: Convert to fraction form
    603.64/905.61 = 170.79/x
  3. Step 3: Cross multiply
    603.64x = 905.61 × 170.79
  4. Step 4: Simplify right side
    603.64x = 154,669.13
  5. Step 5: Solve for x
    x = 154,669.13/603.64
  6. Step 6: Final answer
    x = 256.23

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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.