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Finding the Fourth Proportional to 657.29, 985.93 and 170.34

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Solution

The fourth proportional to 657.29, 985.93 and 170.34 is: 255.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.29 : 985.93 = 170.34 : x
  2. Step 2: Convert to fraction form
    657.29/985.93 = 170.34/x
  3. Step 3: Cross multiply
    657.29x = 985.93 × 170.34
  4. Step 4: Simplify right side
    657.29x = 167,943.32
  5. Step 5: Solve for x
    x = 167,943.32/657.29
  6. Step 6: Final answer
    x = 255.51

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Double scale
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Similar ratio
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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.