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Finding the Fourth Proportional to 1,186.41, 1,637.16 and 662.34

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Solution

The fourth proportional to 1,186.41, 1,637.16 and 662.34 is: 913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.41 : 1,637.16 = 662.34 : x
  2. Step 2: Convert to fraction form
    1,186.41/1,637.16 = 662.34/x
  3. Step 3: Cross multiply
    1,186.41x = 1,637.16 × 662.34
  4. Step 4: Simplify right side
    1,186.41x = 1,084,363.94
  5. Step 5: Solve for x
    x = 1,084,363.94/1,186.41
  6. Step 6: Final answer
    x = 913.98

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1.5x scale

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.