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Finding the Fourth Proportional to 509.74, 764.30 and 336.49

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Solution

The fourth proportional to 509.74, 764.30 and 336.49 is: 504.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.74 : 764.30 = 336.49 : x
  2. Step 2: Convert to fraction form
    509.74/764.30 = 336.49/x
  3. Step 3: Cross multiply
    509.74x = 764.30 × 336.49
  4. Step 4: Simplify right side
    509.74x = 257,178.24
  5. Step 5: Solve for x
    x = 257,178.24/509.74
  6. Step 6: Final answer
    x = 504.53

Related Problems

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Half scale
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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.