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Finding the Fourth Proportional to 647.97, 972.17 and 282.99

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Solution

The fourth proportional to 647.97, 972.17 and 282.99 is: 424.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.97 : 972.17 = 282.99 : x
  2. Step 2: Convert to fraction form
    647.97/972.17 = 282.99/x
  3. Step 3: Cross multiply
    647.97x = 972.17 × 282.99
  4. Step 4: Simplify right side
    647.97x = 275,117.68
  5. Step 5: Solve for x
    x = 275,117.68/647.97
  6. Step 6: Final answer
    x = 424.59

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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.