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Finding the Fourth Proportional to 959.16, 1,436.58 and 671.88

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Solution

The fourth proportional to 959.16, 1,436.58 and 671.88 is: 1,006.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.16 : 1,436.58 = 671.88 : x
  2. Step 2: Convert to fraction form
    959.16/1,436.58 = 671.88/x
  3. Step 3: Cross multiply
    959.16x = 1,436.58 × 671.88
  4. Step 4: Simplify right side
    959.16x = 965,209.37
  5. Step 5: Solve for x
    x = 965,209.37/959.16
  6. Step 6: Final answer
    x = 1,006.31

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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.