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Finding the Fourth Proportional to 543.18, 814.08 and 357.72

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Solution

The fourth proportional to 543.18, 814.08 and 357.72 is: 536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.18 : 814.08 = 357.72 : x
  2. Step 2: Convert to fraction form
    543.18/814.08 = 357.72/x
  3. Step 3: Cross multiply
    543.18x = 814.08 × 357.72
  4. Step 4: Simplify right side
    543.18x = 291,212.70
  5. Step 5: Solve for x
    x = 291,212.70/543.18
  6. Step 6: Final answer
    x = 536.13

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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.