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Finding the Fourth Proportional to 618.33, 927.42 and 357.51

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Solution

The fourth proportional to 618.33, 927.42 and 357.51 is: 536.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.33 : 927.42 = 357.51 : x
  2. Step 2: Convert to fraction form
    618.33/927.42 = 357.51/x
  3. Step 3: Cross multiply
    618.33x = 927.42 × 357.51
  4. Step 4: Simplify right side
    618.33x = 331,561.92
  5. Step 5: Solve for x
    x = 331,561.92/618.33
  6. Step 6: Final answer
    x = 536.22

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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.