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Finding the Fourth Proportional to 623.96, 861.05 and 344.19

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Solution

The fourth proportional to 623.96, 861.05 and 344.19 is: 474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.96 : 861.05 = 344.19 : x
  2. Step 2: Convert to fraction form
    623.96/861.05 = 344.19/x
  3. Step 3: Cross multiply
    623.96x = 861.05 × 344.19
  4. Step 4: Simplify right side
    623.96x = 296,365.66
  5. Step 5: Solve for x
    x = 296,365.66/623.96
  6. Step 6: Final answer
    x = 474.97

Related Problems

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Half scale
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Double scale
Find fourth proportional to 624.96, 862.43 and 345.19
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.