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Finding the Fourth Proportional to 315.64, 435.52 and 227.08

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Solution

The fourth proportional to 315.64, 435.52 and 227.08 is: 313.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.64 : 435.52 = 227.08 : x
  2. Step 2: Convert to fraction form
    315.64/435.52 = 227.08/x
  3. Step 3: Cross multiply
    315.64x = 435.52 × 227.08
  4. Step 4: Simplify right side
    315.64x = 98,897.88
  5. Step 5: Solve for x
    x = 98,897.88/315.64
  6. Step 6: Final answer
    x = 313.32

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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.