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Finding the Fourth Proportional to 624.31, 936.41 and 213.46

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Solution

The fourth proportional to 624.31, 936.41 and 213.46 is: 320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.31 : 936.41 = 213.46 : x
  2. Step 2: Convert to fraction form
    624.31/936.41 = 213.46/x
  3. Step 3: Cross multiply
    624.31x = 936.41 × 213.46
  4. Step 4: Simplify right side
    624.31x = 199,886.50
  5. Step 5: Solve for x
    x = 199,886.50/624.31
  6. Step 6: Final answer
    x = 320.17

Related Problems

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Half scale
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Double scale
Find fourth proportional to 625.31, 937.91 and 214.46
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.