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Finding the Fourth Proportional to 956.89, 1,436.01 and 340.62

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Solution

The fourth proportional to 956.89, 1,436.01 and 340.62 is: 511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.89 : 1,436.01 = 340.62 : x
  2. Step 2: Convert to fraction form
    956.89/1,436.01 = 340.62/x
  3. Step 3: Cross multiply
    956.89x = 1,436.01 × 340.62
  4. Step 4: Simplify right side
    956.89x = 489,133.73
  5. Step 5: Solve for x
    x = 489,133.73/956.89
  6. Step 6: Final answer
    x = 511.17

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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.