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Finding the Fourth Proportional to 612.73, 919.10 and 304.96

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Solution

The fourth proportional to 612.73, 919.10 and 304.96 is: 457.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.73 : 919.10 = 304.96 : x
  2. Step 2: Convert to fraction form
    612.73/919.10 = 304.96/x
  3. Step 3: Cross multiply
    612.73x = 919.10 × 304.96
  4. Step 4: Simplify right side
    612.73x = 280,288.74
  5. Step 5: Solve for x
    x = 280,288.74/612.73
  6. Step 6: Final answer
    x = 457.44

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.