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Finding the Fourth Proportional to 507.35, 761.35 and 324.87

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Solution

The fourth proportional to 507.35, 761.35 and 324.87 is: 487.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.35 : 761.35 = 324.87 : x
  2. Step 2: Convert to fraction form
    507.35/761.35 = 324.87/x
  3. Step 3: Cross multiply
    507.35x = 761.35 × 324.87
  4. Step 4: Simplify right side
    507.35x = 247,338.15
  5. Step 5: Solve for x
    x = 247,338.15/507.35
  6. Step 6: Final answer
    x = 487.51

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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.