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Finding the Fourth Proportional to 959.05, 1,436.72 and 803.12

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Solution

The fourth proportional to 959.05, 1,436.72 and 803.12 is: 1,203.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    959.05 : 1,436.72 = 803.12 : x
  2. Step 2: Convert to fraction form
    959.05/1,436.72 = 803.12/x
  3. Step 3: Cross multiply
    959.05x = 1,436.72 × 803.12
  4. Step 4: Simplify right side
    959.05x = 1,153,861.15
  5. Step 5: Solve for x
    x = 1,153,861.15/959.05
  6. Step 6: Final answer
    x = 1,203.13

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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.