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Finding the Fourth Proportional to 1,306.07, 1,802.33 and 716.62

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Solution

The fourth proportional to 1,306.07, 1,802.33 and 716.62 is: 988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.07 : 1,802.33 = 716.62 : x
  2. Step 2: Convert to fraction form
    1,306.07/1,802.33 = 716.62/x
  3. Step 3: Cross multiply
    1,306.07x = 1,802.33 × 716.62
  4. Step 4: Simplify right side
    1,306.07x = 1,291,586.76
  5. Step 5: Solve for x
    x = 1,291,586.76/1,306.07
  6. Step 6: Final answer
    x = 988.91

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Why These Related Problems?

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