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Finding the Fourth Proportional to 647.96, 972.24 and 237.14

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Solution

The fourth proportional to 647.96, 972.24 and 237.14 is: 355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.96 : 972.24 = 237.14 : x
  2. Step 2: Convert to fraction form
    647.96/972.24 = 237.14/x
  3. Step 3: Cross multiply
    647.96x = 972.24 × 237.14
  4. Step 4: Simplify right side
    647.96x = 230,556.99
  5. Step 5: Solve for x
    x = 230,556.99/647.96
  6. Step 6: Final answer
    x = 355.82

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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.