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Finding the Fourth Proportional to 314.77, 434.60 and 236.26

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Solution

The fourth proportional to 314.77, 434.60 and 236.26 is: 326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.77 : 434.60 = 236.26 : x
  2. Step 2: Convert to fraction form
    314.77/434.60 = 236.26/x
  3. Step 3: Cross multiply
    314.77x = 434.60 × 236.26
  4. Step 4: Simplify right side
    314.77x = 102,678.10
  5. Step 5: Solve for x
    x = 102,678.10/314.77
  6. Step 6: Final answer
    x = 326.20

Related Problems

Find fourth proportional to 157.38, 217.30 and 118.13
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Double scale
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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.