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Finding the Fourth Proportional to 554.76, 827.58 and 490.62

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Solution

The fourth proportional to 554.76, 827.58 and 490.62 is: 731.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.76 : 827.58 = 490.62 : x
  2. Step 2: Convert to fraction form
    554.76/827.58 = 490.62/x
  3. Step 3: Cross multiply
    554.76x = 827.58 × 490.62
  4. Step 4: Simplify right side
    554.76x = 406,027.30
  5. Step 5: Solve for x
    x = 406,027.30/554.76
  6. Step 6: Final answer
    x = 731.90

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.