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Finding the Fourth Proportional to 717.59, 989.98 and 437.60

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Solution

The fourth proportional to 717.59, 989.98 and 437.60 is: 603.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.59 : 989.98 = 437.60 : x
  2. Step 2: Convert to fraction form
    717.59/989.98 = 437.60/x
  3. Step 3: Cross multiply
    717.59x = 989.98 × 437.60
  4. Step 4: Simplify right side
    717.59x = 433,216.63
  5. Step 5: Solve for x
    x = 433,216.63/717.59
  6. Step 6: Final answer
    x = 603.71

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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.