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Finding the Fourth Proportional to 618.16, 926.90 and 207.08

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Solution

The fourth proportional to 618.16, 926.90 and 207.08 is: 310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.16 : 926.90 = 207.08 : x
  2. Step 2: Convert to fraction form
    618.16/926.90 = 207.08/x
  3. Step 3: Cross multiply
    618.16x = 926.90 × 207.08
  4. Step 4: Simplify right side
    618.16x = 191,942.45
  5. Step 5: Solve for x
    x = 191,942.45/618.16
  6. Step 6: Final answer
    x = 310.51

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.