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Finding the Fourth Proportional to 873.64, 1,205.04 and 574.75

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Solution

The fourth proportional to 873.64, 1,205.04 and 574.75 is: 792.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.64 : 1,205.04 = 574.75 : x
  2. Step 2: Convert to fraction form
    873.64/1,205.04 = 574.75/x
  3. Step 3: Cross multiply
    873.64x = 1,205.04 × 574.75
  4. Step 4: Simplify right side
    873.64x = 692,596.74
  5. Step 5: Solve for x
    x = 692,596.74/873.64
  6. Step 6: Final answer
    x = 792.77

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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.