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Finding the Fourth Proportional to 543.84, 750.31 and 354.70

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Solution

The fourth proportional to 543.84, 750.31 and 354.70 is: 489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.84 : 750.31 = 354.70 : x
  2. Step 2: Convert to fraction form
    543.84/750.31 = 354.70/x
  3. Step 3: Cross multiply
    543.84x = 750.31 × 354.70
  4. Step 4: Simplify right side
    543.84x = 266,134.96
  5. Step 5: Solve for x
    x = 266,134.96/543.84
  6. Step 6: Final answer
    x = 489.36

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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.