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Finding the Fourth Proportional to 716.02, 1,074.12 and 305.08

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Solution

The fourth proportional to 716.02, 1,074.12 and 305.08 is: 457.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.02 : 1,074.12 = 305.08 : x
  2. Step 2: Convert to fraction form
    716.02/1,074.12 = 305.08/x
  3. Step 3: Cross multiply
    716.02x = 1,074.12 × 305.08
  4. Step 4: Simplify right side
    716.02x = 327,692.53
  5. Step 5: Solve for x
    x = 327,692.53/716.02
  6. Step 6: Final answer
    x = 457.66

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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.