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Finding the Fourth Proportional to 507.87, 761.60 and 178.77

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Solution

The fourth proportional to 507.87, 761.60 and 178.77 is: 268.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.87 : 761.60 = 178.77 : x
  2. Step 2: Convert to fraction form
    507.87/761.60 = 178.77/x
  3. Step 3: Cross multiply
    507.87x = 761.60 × 178.77
  4. Step 4: Simplify right side
    507.87x = 136,154.53
  5. Step 5: Solve for x
    x = 136,154.53/507.87
  6. Step 6: Final answer
    x = 268.09

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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.