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Finding the Fourth Proportional to 507.56, 761.10 and 219.08

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Solution

The fourth proportional to 507.56, 761.10 and 219.08 is: 328.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.56 : 761.10 = 219.08 : x
  2. Step 2: Convert to fraction form
    507.56/761.10 = 219.08/x
  3. Step 3: Cross multiply
    507.56x = 761.10 × 219.08
  4. Step 4: Simplify right side
    507.56x = 166,741.79
  5. Step 5: Solve for x
    x = 166,741.79/507.56
  6. Step 6: Final answer
    x = 328.52

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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.