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Finding the Fourth Proportional to 440.14, 607.38 and 243.70

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Solution

The fourth proportional to 440.14, 607.38 and 243.70 is: 336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.14 : 607.38 = 243.70 : x
  2. Step 2: Convert to fraction form
    440.14/607.38 = 243.70/x
  3. Step 3: Cross multiply
    440.14x = 607.38 × 243.70
  4. Step 4: Simplify right side
    440.14x = 148,018.51
  5. Step 5: Solve for x
    x = 148,018.51/440.14
  6. Step 6: Final answer
    x = 336.30

Related Problems

Find fourth proportional to 220.07, 303.69 and 121.85
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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.