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Finding the Fourth Proportional to 612.77, 845.63 and 364.20

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Solution

The fourth proportional to 612.77, 845.63 and 364.20 is: 502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.77 : 845.63 = 364.20 : x
  2. Step 2: Convert to fraction form
    612.77/845.63 = 364.20/x
  3. Step 3: Cross multiply
    612.77x = 845.63 × 364.20
  4. Step 4: Simplify right side
    612.77x = 307,976.63
  5. Step 5: Solve for x
    x = 307,976.63/612.77
  6. Step 6: Final answer
    x = 502.60

Related Problems

Find fourth proportional to 306.38, 422.81 and 182.10
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1.5x scale

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.