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Finding the Fourth Proportional to 716.58, 1,073.64 and 442.08

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Solution

The fourth proportional to 716.58, 1,073.64 and 442.08 is: 662.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.58 : 1,073.64 = 442.08 : x
  2. Step 2: Convert to fraction form
    716.58/1,073.64 = 442.08/x
  3. Step 3: Cross multiply
    716.58x = 1,073.64 × 442.08
  4. Step 4: Simplify right side
    716.58x = 474,634.77
  5. Step 5: Solve for x
    x = 474,634.77/716.58
  6. Step 6: Final answer
    x = 662.36

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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.