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Finding the Fourth Proportional to 440.19, 607.46 and 274.37

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Solution

The fourth proportional to 440.19, 607.46 and 274.37 is: 378.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.19 : 607.46 = 274.37 : x
  2. Step 2: Convert to fraction form
    440.19/607.46 = 274.37/x
  3. Step 3: Cross multiply
    440.19x = 607.46 × 274.37
  4. Step 4: Simplify right side
    440.19x = 166,664.39
  5. Step 5: Solve for x
    x = 166,664.39/440.19
  6. Step 6: Final answer
    x = 378.62

Related Problems

Find fourth proportional to 220.10, 303.73 and 137.18
Half scale
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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.