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Finding the Fourth Proportional to 654.04, 981.04 and 545.48

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Solution

The fourth proportional to 654.04, 981.04 and 545.48 is: 818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.04 : 981.04 = 545.48 : x
  2. Step 2: Convert to fraction form
    654.04/981.04 = 545.48/x
  3. Step 3: Cross multiply
    654.04x = 981.04 × 545.48
  4. Step 4: Simplify right side
    654.04x = 535,137.70
  5. Step 5: Solve for x
    x = 535,137.70/654.04
  6. Step 6: Final answer
    x = 818.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.