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Finding the Fourth Proportional to 513.04, 769.64 and 171.04

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Solution

The fourth proportional to 513.04, 769.64 and 171.04 is: 256.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.04 : 769.64 = 171.04 : x
  2. Step 2: Convert to fraction form
    513.04/769.64 = 171.04/x
  3. Step 3: Cross multiply
    513.04x = 769.64 × 171.04
  4. Step 4: Simplify right side
    513.04x = 131,639.23
  5. Step 5: Solve for x
    x = 131,639.23/513.04
  6. Step 6: Final answer
    x = 256.59

Related Problems

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Half scale
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Double scale
Find fourth proportional to 514.04, 771.14 and 172.04
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.