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Finding the Fourth Proportional to 654.52, 981.08 and 346.18

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Solution

The fourth proportional to 654.52, 981.08 and 346.18 is: 518.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.52 : 981.08 = 346.18 : x
  2. Step 2: Convert to fraction form
    654.52/981.08 = 346.18/x
  3. Step 3: Cross multiply
    654.52x = 981.08 × 346.18
  4. Step 4: Simplify right side
    654.52x = 339,630.27
  5. Step 5: Solve for x
    x = 339,630.27/654.52
  6. Step 6: Final answer
    x = 518.90

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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.