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Finding the Fourth Proportional to 1,164.76, 1,746.78 and 434.41

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Solution

The fourth proportional to 1,164.76, 1,746.78 and 434.41 is: 651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.76 : 1,746.78 = 434.41 : x
  2. Step 2: Convert to fraction form
    1,164.76/1,746.78 = 434.41/x
  3. Step 3: Cross multiply
    1,164.76x = 1,746.78 × 434.41
  4. Step 4: Simplify right side
    1,164.76x = 758,818.70
  5. Step 5: Solve for x
    x = 758,818.70/1,164.76
  6. Step 6: Final answer
    x = 651.48

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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.