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Finding the Fourth Proportional to 553.92, 764.07 and 471.51

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Solution

The fourth proportional to 553.92, 764.07 and 471.51 is: 650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.92 : 764.07 = 471.51 : x
  2. Step 2: Convert to fraction form
    553.92/764.07 = 471.51/x
  3. Step 3: Cross multiply
    553.92x = 764.07 × 471.51
  4. Step 4: Simplify right side
    553.92x = 360,266.65
  5. Step 5: Solve for x
    x = 360,266.65/553.92
  6. Step 6: Final answer
    x = 650.39

Related Problems

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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.