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Finding the Fourth Proportional to 543.35, 812.59 and 529.99

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Solution

The fourth proportional to 543.35, 812.59 and 529.99 is: 792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.35 : 812.59 = 529.99 : x
  2. Step 2: Convert to fraction form
    543.35/812.59 = 529.99/x
  3. Step 3: Cross multiply
    543.35x = 812.59 × 529.99
  4. Step 4: Simplify right side
    543.35x = 430,664.57
  5. Step 5: Solve for x
    x = 430,664.57/543.35
  6. Step 6: Final answer
    x = 792.61

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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.