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Finding the Fourth Proportional to 618.45, 927.36 and 185.55

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Solution

The fourth proportional to 618.45, 927.36 and 185.55 is: 278.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.45 : 927.36 = 185.55 : x
  2. Step 2: Convert to fraction form
    618.45/927.36 = 185.55/x
  3. Step 3: Cross multiply
    618.45x = 927.36 × 185.55
  4. Step 4: Simplify right side
    618.45x = 172,071.65
  5. Step 5: Solve for x
    x = 172,071.65/618.45
  6. Step 6: Final answer
    x = 278.23

Related Problems

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Half scale
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Double scale
Find fourth proportional to 619.45, 928.86 and 186.55
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.