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Finding the Fourth Proportional to 554.38, 764.02 and 476.62

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Solution

The fourth proportional to 554.38, 764.02 and 476.62 is: 656.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.38 : 764.02 = 476.62 : x
  2. Step 2: Convert to fraction form
    554.38/764.02 = 476.62/x
  3. Step 3: Cross multiply
    554.38x = 764.02 × 476.62
  4. Step 4: Simplify right side
    554.38x = 364,147.21
  5. Step 5: Solve for x
    x = 364,147.21/554.38
  6. Step 6: Final answer
    x = 656.85

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Double scale
Find fourth proportional to 555.38, 765.40 and 477.62
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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.