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Finding the Fourth Proportional to 673.20, 927.72 and 554.76

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Solution

The fourth proportional to 673.20, 927.72 and 554.76 is: 764.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.20 : 927.72 = 554.76 : x
  2. Step 2: Convert to fraction form
    673.20/927.72 = 554.76/x
  3. Step 3: Cross multiply
    673.20x = 927.72 × 554.76
  4. Step 4: Simplify right side
    673.20x = 514,661.95
  5. Step 5: Solve for x
    x = 514,661.95/673.20
  6. Step 6: Final answer
    x = 764.50

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Half scale
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Double scale
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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.