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Finding the Fourth Proportional to 647.59, 971.39 and 237.19

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Solution

The fourth proportional to 647.59, 971.39 and 237.19 is: 355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.59 : 971.39 = 237.19 : x
  2. Step 2: Convert to fraction form
    647.59/971.39 = 237.19/x
  3. Step 3: Cross multiply
    647.59x = 971.39 × 237.19
  4. Step 4: Simplify right side
    647.59x = 230,400.38
  5. Step 5: Solve for x
    x = 230,400.38/647.59
  6. Step 6: Final answer
    x = 355.78

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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.