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Finding the Fourth Proportional to 1,207.01, 1,665.55 and 682.67

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Solution

The fourth proportional to 1,207.01, 1,665.55 and 682.67 is: 942.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.01 : 1,665.55 = 682.67 : x
  2. Step 2: Convert to fraction form
    1,207.01/1,665.55 = 682.67/x
  3. Step 3: Cross multiply
    1,207.01x = 1,665.55 × 682.67
  4. Step 4: Simplify right side
    1,207.01x = 1,137,021.02
  5. Step 5: Solve for x
    x = 1,137,021.02/1,207.01
  6. Step 6: Final answer
    x = 942.01

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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.