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Finding the Fourth Proportional to 646.62, 970.07 and 235.74

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Solution

The fourth proportional to 646.62, 970.07 and 235.74 is: 353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.62 : 970.07 = 235.74 : x
  2. Step 2: Convert to fraction form
    646.62/970.07 = 235.74/x
  3. Step 3: Cross multiply
    646.62x = 970.07 × 235.74
  4. Step 4: Simplify right side
    646.62x = 228,684.30
  5. Step 5: Solve for x
    x = 228,684.30/646.62
  6. Step 6: Final answer
    x = 353.66

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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.