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Finding the Fourth Proportional to 509.49, 764.10 and 235.44

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Solution

The fourth proportional to 509.49, 764.10 and 235.44 is: 353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    509.49 : 764.10 = 235.44 : x
  2. Step 2: Convert to fraction form
    509.49/764.10 = 235.44/x
  3. Step 3: Cross multiply
    509.49x = 764.10 × 235.44
  4. Step 4: Simplify right side
    509.49x = 179,899.70
  5. Step 5: Solve for x
    x = 179,899.70/509.49
  6. Step 6: Final answer
    x = 353.10

Related Problems

Find fourth proportional to 254.75, 382.05 and 117.72
Half scale
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Double scale
Find fourth proportional to 510.49, 765.60 and 236.44
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.