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Finding the Fourth Proportional to 514.38, 709.61 and 374.44

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Solution

The fourth proportional to 514.38, 709.61 and 374.44 is: 516.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.38 : 709.61 = 374.44 : x
  2. Step 2: Convert to fraction form
    514.38/709.61 = 374.44/x
  3. Step 3: Cross multiply
    514.38x = 709.61 × 374.44
  4. Step 4: Simplify right side
    514.38x = 265,702.72
  5. Step 5: Solve for x
    x = 265,702.72/514.38
  6. Step 6: Final answer
    x = 516.55

Related Problems

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Double scale
Find fourth proportional to 515.38, 710.98 and 375.44
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.