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Finding the Fourth Proportional to 1,164.80, 1,746.60 and 342.86

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Solution

The fourth proportional to 1,164.80, 1,746.60 and 342.86 is: 514.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,164.80 : 1,746.60 = 342.86 : x
  2. Step 2: Convert to fraction form
    1,164.80/1,746.60 = 342.86/x
  3. Step 3: Cross multiply
    1,164.80x = 1,746.60 × 342.86
  4. Step 4: Simplify right side
    1,164.80x = 598,830.54
  5. Step 5: Solve for x
    x = 598,830.54/1,164.80
  6. Step 6: Final answer
    x = 514.11

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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.