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Finding the Fourth Proportional to 959.65, 1,438 and 568.87

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Solution

The fourth proportional to 959.65, 1,438 and 568.87 is: 852.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.65 : 1,438 = 568.87 : x
  2. Step 2: Convert to fraction form
    959.65/1,438 = 568.87/x
  3. Step 3: Cross multiply
    959.65x = 1,438 × 568.87
  4. Step 4: Simplify right side
    959.65x = 818,035.06
  5. Step 5: Solve for x
    x = 818,035.06/959.65
  6. Step 6: Final answer
    x = 852.43

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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.