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Finding the Fourth Proportional to 1,181.46, 1,630.44 and 657.53

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Solution

The fourth proportional to 1,181.46, 1,630.44 and 657.53 is: 907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.46 : 1,630.44 = 657.53 : x
  2. Step 2: Convert to fraction form
    1,181.46/1,630.44 = 657.53/x
  3. Step 3: Cross multiply
    1,181.46x = 1,630.44 × 657.53
  4. Step 4: Simplify right side
    1,181.46x = 1,072,055.06
  5. Step 5: Solve for x
    x = 1,072,055.06/1,181.46
  6. Step 6: Final answer
    x = 907.40

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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.