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Finding the Fourth Proportional to 545.04, 812.88 and 540.72

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Solution

The fourth proportional to 545.04, 812.88 and 540.72 is: 806.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.04 : 812.88 = 540.72 : x
  2. Step 2: Convert to fraction form
    545.04/812.88 = 540.72/x
  3. Step 3: Cross multiply
    545.04x = 812.88 × 540.72
  4. Step 4: Simplify right side
    545.04x = 439,540.47
  5. Step 5: Solve for x
    x = 439,540.47/545.04
  6. Step 6: Final answer
    x = 806.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.