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Finding the Fourth Proportional to 509.40, 764.10 and 184.59

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Solution

The fourth proportional to 509.40, 764.10 and 184.59 is: 276.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.40 : 764.10 = 184.59 : x
  2. Step 2: Convert to fraction form
    509.40/764.10 = 184.59/x
  3. Step 3: Cross multiply
    509.40x = 764.10 × 184.59
  4. Step 4: Simplify right side
    509.40x = 141,045.22
  5. Step 5: Solve for x
    x = 141,045.22/509.40
  6. Step 6: Final answer
    x = 276.89

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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.