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Finding the Fourth Proportional to 411.74, 617.07 and 303.02

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Solution

The fourth proportional to 411.74, 617.07 and 303.02 is: 454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.74 : 617.07 = 303.02 : x
  2. Step 2: Convert to fraction form
    411.74/617.07 = 303.02/x
  3. Step 3: Cross multiply
    411.74x = 617.07 × 303.02
  4. Step 4: Simplify right side
    411.74x = 186,984.55
  5. Step 5: Solve for x
    x = 186,984.55/411.74
  6. Step 6: Final answer
    x = 454.13

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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.