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Finding the Fourth Proportional to 719.30, 992.64 and 562.11

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Solution

The fourth proportional to 719.30, 992.64 and 562.11 is: 775.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.30 : 992.64 = 562.11 : x
  2. Step 2: Convert to fraction form
    719.30/992.64 = 562.11/x
  3. Step 3: Cross multiply
    719.30x = 992.64 × 562.11
  4. Step 4: Simplify right side
    719.30x = 557,971.47
  5. Step 5: Solve for x
    x = 557,971.47/719.30
  6. Step 6: Final answer
    x = 775.72

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