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Finding the Fourth Proportional to 1,076.06, 1,612.55 and 637.40

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Solution

The fourth proportional to 1,076.06, 1,612.55 and 637.40 is: 955.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.06 : 1,612.55 = 637.40 : x
  2. Step 2: Convert to fraction form
    1,076.06/1,612.55 = 637.40/x
  3. Step 3: Cross multiply
    1,076.06x = 1,612.55 × 637.40
  4. Step 4: Simplify right side
    1,076.06x = 1,027,832.90
  5. Step 5: Solve for x
    x = 1,027,832.90/1,076.06
  6. Step 6: Final answer
    x = 955.19

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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.