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Finding the Fourth Proportional to 1,495.12, 2,063.18 and 865.60

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Solution

The fourth proportional to 1,495.12, 2,063.18 and 865.60 is: 1,194.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,495.12 : 2,063.18 = 865.60 : x
  2. Step 2: Convert to fraction form
    1,495.12/2,063.18 = 865.60/x
  3. Step 3: Cross multiply
    1,495.12x = 2,063.18 × 865.60
  4. Step 4: Simplify right side
    1,495.12x = 1,785,890.10
  5. Step 5: Solve for x
    x = 1,785,890.10/1,495.12
  6. Step 6: Final answer
    x = 1,194.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.