Home / 1,001.14-1,381.08-669.64

Finding the Fourth Proportional to 1,001.14, 1,381.08 and 669.64

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Solution

The fourth proportional to 1,001.14, 1,381.08 and 669.64 is: 923.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001.14 : 1,381.08 = 669.64 : x
  2. Step 2: Convert to fraction form
    1,001.14/1,381.08 = 669.64/x
  3. Step 3: Cross multiply
    1,001.14x = 1,381.08 × 669.64
  4. Step 4: Simplify right side
    1,001.14x = 924,826.41
  5. Step 5: Solve for x
    x = 924,826.41/1,001.14
  6. Step 6: Final answer
    x = 923.77

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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.