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Finding the Fourth Proportional to 440.83, 608.45 and 316.86

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Solution

The fourth proportional to 440.83, 608.45 and 316.86 is: 437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.83 : 608.45 = 316.86 : x
  2. Step 2: Convert to fraction form
    440.83/608.45 = 316.86/x
  3. Step 3: Cross multiply
    440.83x = 608.45 × 316.86
  4. Step 4: Simplify right side
    440.83x = 192,793.47
  5. Step 5: Solve for x
    x = 192,793.47/440.83
  6. Step 6: Final answer
    x = 437.34

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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.