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Finding the Fourth Proportional to 654.74, 981.45 and 308.26

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Solution

The fourth proportional to 654.74, 981.45 and 308.26 is: 462.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.74 : 981.45 = 308.26 : x
  2. Step 2: Convert to fraction form
    654.74/981.45 = 308.26/x
  3. Step 3: Cross multiply
    654.74x = 981.45 × 308.26
  4. Step 4: Simplify right side
    654.74x = 302,543.00
  5. Step 5: Solve for x
    x = 302,543.00/654.74
  6. Step 6: Final answer
    x = 462.08

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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.