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Finding the Fourth Proportional to 457.12, 684.70 and 303.11

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Solution

The fourth proportional to 457.12, 684.70 and 303.11 is: 454.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.12 : 684.70 = 303.11 : x
  2. Step 2: Convert to fraction form
    457.12/684.70 = 303.11/x
  3. Step 3: Cross multiply
    457.12x = 684.70 × 303.11
  4. Step 4: Simplify right side
    457.12x = 207,535.24
  5. Step 5: Solve for x
    x = 207,535.24/457.12
  6. Step 6: Final answer
    x = 454.01

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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.