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Finding the Fourth Proportional to 1,156.48, 1,735.08 and 636.88

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Solution

The fourth proportional to 1,156.48, 1,735.08 and 636.88 is: 955.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.48 : 1,735.08 = 636.88 : x
  2. Step 2: Convert to fraction form
    1,156.48/1,735.08 = 636.88/x
  3. Step 3: Cross multiply
    1,156.48x = 1,735.08 × 636.88
  4. Step 4: Simplify right side
    1,156.48x = 1,105,037.75
  5. Step 5: Solve for x
    x = 1,105,037.75/1,156.48
  6. Step 6: Final answer
    x = 955.52

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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.