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Finding the Fourth Proportional to 554.38, 832.65 and 451.74

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Solution

The fourth proportional to 554.38, 832.65 and 451.74 is: 678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.38 : 832.65 = 451.74 : x
  2. Step 2: Convert to fraction form
    554.38/832.65 = 451.74/x
  3. Step 3: Cross multiply
    554.38x = 832.65 × 451.74
  4. Step 4: Simplify right side
    554.38x = 376,141.31
  5. Step 5: Solve for x
    x = 376,141.31/554.38
  6. Step 6: Final answer
    x = 678.49

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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.