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Finding the Fourth Proportional to 513.30, 708.35 and 336.38

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Solution

The fourth proportional to 513.30, 708.35 and 336.38 is: 464.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.30 : 708.35 = 336.38 : x
  2. Step 2: Convert to fraction form
    513.30/708.35 = 336.38/x
  3. Step 3: Cross multiply
    513.30x = 708.35 × 336.38
  4. Step 4: Simplify right side
    513.30x = 238,269.55
  5. Step 5: Solve for x
    x = 238,269.55/513.30
  6. Step 6: Final answer
    x = 464.19

Related Problems

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Half scale
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Double scale
Find fourth proportional to 514.30, 709.72 and 337.38
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.