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Finding the Fourth Proportional to 543.00, 748.95 and 383.22

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Solution

The fourth proportional to 543.00, 748.95 and 383.22 is: 528.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.00 : 748.95 = 383.22 : x
  2. Step 2: Convert to fraction form
    543.00/748.95 = 383.22/x
  3. Step 3: Cross multiply
    543.00x = 748.95 × 383.22
  4. Step 4: Simplify right side
    543.00x = 287,013.29
  5. Step 5: Solve for x
    x = 287,013.29/543.00
  6. Step 6: Final answer
    x = 528.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.