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Finding the Fourth Proportional to 612.11, 918.17 and 304.34

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Solution

The fourth proportional to 612.11, 918.17 and 304.34 is: 456.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.11 : 918.17 = 304.34 : x
  2. Step 2: Convert to fraction form
    612.11/918.17 = 304.34/x
  3. Step 3: Cross multiply
    612.11x = 918.17 × 304.34
  4. Step 4: Simplify right side
    612.11x = 279,429.75
  5. Step 5: Solve for x
    x = 279,429.75/612.11
  6. Step 6: Final answer
    x = 456.51

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.