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Finding the Fourth Proportional to 914.47, 1,262.11 and 719.46

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Solution

The fourth proportional to 914.47, 1,262.11 and 719.46 is: 992.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.47 : 1,262.11 = 719.46 : x
  2. Step 2: Convert to fraction form
    914.47/1,262.11 = 719.46/x
  3. Step 3: Cross multiply
    914.47x = 1,262.11 × 719.46
  4. Step 4: Simplify right side
    914.47x = 908,037.66
  5. Step 5: Solve for x
    x = 908,037.66/914.47
  6. Step 6: Final answer
    x = 992.97

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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.