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Finding the Fourth Proportional to 612.76, 845.63 and 350.86

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Solution

The fourth proportional to 612.76, 845.63 and 350.86 is: 484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.76 : 845.63 = 350.86 : x
  2. Step 2: Convert to fraction form
    612.76/845.63 = 350.86/x
  3. Step 3: Cross multiply
    612.76x = 845.63 × 350.86
  4. Step 4: Simplify right side
    612.76x = 296,697.74
  5. Step 5: Solve for x
    x = 296,697.74/612.76
  6. Step 6: Final answer
    x = 484.20

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Find fourth proportional to 306.38, 422.82 and 175.43
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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.