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Finding the Fourth Proportional to 543.65, 815.54 and 235.49

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Solution

The fourth proportional to 543.65, 815.54 and 235.49 is: 353.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.65 : 815.54 = 235.49 : x
  2. Step 2: Convert to fraction form
    543.65/815.54 = 235.49/x
  3. Step 3: Cross multiply
    543.65x = 815.54 × 235.49
  4. Step 4: Simplify right side
    543.65x = 192,046.26
  5. Step 5: Solve for x
    x = 192,046.26/543.65
  6. Step 6: Final answer
    x = 353.26

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Double scale
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Similar ratio
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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.