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Finding the Fourth Proportional to 985.22, 1,477.52 and 336.05

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Solution

The fourth proportional to 985.22, 1,477.52 and 336.05 is: 503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    985.22 : 1,477.52 = 336.05 : x
  2. Step 2: Convert to fraction form
    985.22/1,477.52 = 336.05/x
  3. Step 3: Cross multiply
    985.22x = 1,477.52 × 336.05
  4. Step 4: Simplify right side
    985.22x = 496,518.92
  5. Step 5: Solve for x
    x = 496,518.92/985.22
  6. Step 6: Final answer
    x = 503.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.