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Finding the Fourth Proportional to 507.89, 761.45 and 234.20

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Solution

The fourth proportional to 507.89, 761.45 and 234.20 is: 351.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.89 : 761.45 = 234.20 : x
  2. Step 2: Convert to fraction form
    507.89/761.45 = 234.20/x
  3. Step 3: Cross multiply
    507.89x = 761.45 × 234.20
  4. Step 4: Simplify right side
    507.89x = 178,326.61
  5. Step 5: Solve for x
    x = 178,326.61/507.89
  6. Step 6: Final answer
    x = 351.12

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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.