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Finding the Fourth Proportional to 612.75, 845.57 and 363.92

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Solution

The fourth proportional to 612.75, 845.57 and 363.92 is: 502.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.75 : 845.57 = 363.92 : x
  2. Step 2: Convert to fraction form
    612.75/845.57 = 363.92/x
  3. Step 3: Cross multiply
    612.75x = 845.57 × 363.92
  4. Step 4: Simplify right side
    612.75x = 307,719.83
  5. Step 5: Solve for x
    x = 307,719.83/612.75
  6. Step 6: Final answer
    x = 502.19

Related Problems

Find fourth proportional to 306.38, 422.79 and 181.96
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.