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Finding the Fourth Proportional to 316.85, 436.86 and 264.47

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Solution

The fourth proportional to 316.85, 436.86 and 264.47 is: 364.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.85 : 436.86 = 264.47 : x
  2. Step 2: Convert to fraction form
    316.85/436.86 = 264.47/x
  3. Step 3: Cross multiply
    316.85x = 436.86 × 264.47
  4. Step 4: Simplify right side
    316.85x = 115,536.36
  5. Step 5: Solve for x
    x = 115,536.36/316.85
  6. Step 6: Final answer
    x = 364.64

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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.