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Finding the Fourth Proportional to 521.77, 719.77 and 423.36

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Solution

The fourth proportional to 521.77, 719.77 and 423.36 is: 584.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.77 : 719.77 = 423.36 : x
  2. Step 2: Convert to fraction form
    521.77/719.77 = 423.36/x
  3. Step 3: Cross multiply
    521.77x = 719.77 × 423.36
  4. Step 4: Simplify right side
    521.77x = 304,716.11
  5. Step 5: Solve for x
    x = 304,716.11/521.77
  6. Step 6: Final answer
    x = 584.00

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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.