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Finding the Fourth Proportional to 520.32, 774.57 and 517.57

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Solution

The fourth proportional to 520.32, 774.57 and 517.57 is: 770.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.32 : 774.57 = 517.57 : x
  2. Step 2: Convert to fraction form
    520.32/774.57 = 517.57/x
  3. Step 3: Cross multiply
    520.32x = 774.57 × 517.57
  4. Step 4: Simplify right side
    520.32x = 400,894.19
  5. Step 5: Solve for x
    x = 400,894.19/520.32
  6. Step 6: Final answer
    x = 770.48

Related Problems

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.