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Finding the Fourth Proportional to 543.73, 750.35 and 310.86

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Solution

The fourth proportional to 543.73, 750.35 and 310.86 is: 428.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.73 : 750.35 = 310.86 : x
  2. Step 2: Convert to fraction form
    543.73/750.35 = 310.86/x
  3. Step 3: Cross multiply
    543.73x = 750.35 × 310.86
  4. Step 4: Simplify right side
    543.73x = 233,248.49
  5. Step 5: Solve for x
    x = 233,248.49/543.73
  6. Step 6: Final answer
    x = 428.98

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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.