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Finding the Fourth Proportional to 689.13, 950.94 and 440.01

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Solution

The fourth proportional to 689.13, 950.94 and 440.01 is: 607.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.13 : 950.94 = 440.01 : x
  2. Step 2: Convert to fraction form
    689.13/950.94 = 440.01/x
  3. Step 3: Cross multiply
    689.13x = 950.94 × 440.01
  4. Step 4: Simplify right side
    689.13x = 418,423.11
  5. Step 5: Solve for x
    x = 418,423.11/689.13
  6. Step 6: Final answer
    x = 607.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.