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Finding the Fourth Proportional to 506.98, 755.23 and 491.68

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Solution

The fourth proportional to 506.98, 755.23 and 491.68 is: 732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    506.98 : 755.23 = 491.68 : x
  2. Step 2: Convert to fraction form
    506.98/755.23 = 491.68/x
  3. Step 3: Cross multiply
    506.98x = 755.23 × 491.68
  4. Step 4: Simplify right side
    506.98x = 371,331.49
  5. Step 5: Solve for x
    x = 371,331.49/506.98
  6. Step 6: Final answer
    x = 732.44

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.