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Finding the Fourth Proportional to 545.21, 750.51 and 527.43

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Solution

The fourth proportional to 545.21, 750.51 and 527.43 is: 726.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.21 : 750.51 = 527.43 : x
  2. Step 2: Convert to fraction form
    545.21/750.51 = 527.43/x
  3. Step 3: Cross multiply
    545.21x = 750.51 × 527.43
  4. Step 4: Simplify right side
    545.21x = 395,841.49
  5. Step 5: Solve for x
    x = 395,841.49/545.21
  6. Step 6: Final answer
    x = 726.03

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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.