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Finding the Fourth Proportional to 543.33, 747.99 and 438.03

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Solution

The fourth proportional to 543.33, 747.99 and 438.03 is: 603.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.33 : 747.99 = 438.03 : x
  2. Step 2: Convert to fraction form
    543.33/747.99 = 438.03/x
  3. Step 3: Cross multiply
    543.33x = 747.99 × 438.03
  4. Step 4: Simplify right side
    543.33x = 327,642.06
  5. Step 5: Solve for x
    x = 327,642.06/543.33
  6. Step 6: Final answer
    x = 603.03

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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.