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Finding the Fourth Proportional to 612.86, 845.70 and 350.87

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Solution

The fourth proportional to 612.86, 845.70 and 350.87 is: 484.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.86 : 845.70 = 350.87 : x
  2. Step 2: Convert to fraction form
    612.86/845.70 = 350.87/x
  3. Step 3: Cross multiply
    612.86x = 845.70 × 350.87
  4. Step 4: Simplify right side
    612.86x = 296,726.53
  5. Step 5: Solve for x
    x = 296,726.53/612.86
  6. Step 6: Final answer
    x = 484.17

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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.