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Finding the Fourth Proportional to 486.92, 672.03 and 277.11

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Solution

The fourth proportional to 486.92, 672.03 and 277.11 is: 382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.92 : 672.03 = 277.11 : x
  2. Step 2: Convert to fraction form
    486.92/672.03 = 277.11/x
  3. Step 3: Cross multiply
    486.92x = 672.03 × 277.11
  4. Step 4: Simplify right side
    486.92x = 186,226.23
  5. Step 5: Solve for x
    x = 186,226.23/486.92
  6. Step 6: Final answer
    x = 382.46

Related Problems

Find fourth proportional to 243.46, 336.02 and 138.56
Half scale
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Double scale
Find fourth proportional to 487.92, 673.41 and 278.11
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.