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Finding the Fourth Proportional to 517.53, 776.56 and 322.49

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Solution

The fourth proportional to 517.53, 776.56 and 322.49 is: 483.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.53 : 776.56 = 322.49 : x
  2. Step 2: Convert to fraction form
    517.53/776.56 = 322.49/x
  3. Step 3: Cross multiply
    517.53x = 776.56 × 322.49
  4. Step 4: Simplify right side
    517.53x = 250,429.35
  5. Step 5: Solve for x
    x = 250,429.35/517.53
  6. Step 6: Final answer
    x = 483.89

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