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Finding the Fourth Proportional to 458.83, 688.53 and 305.11

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Solution

The fourth proportional to 458.83, 688.53 and 305.11 is: 457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.83 : 688.53 = 305.11 : x
  2. Step 2: Convert to fraction form
    458.83/688.53 = 305.11/x
  3. Step 3: Cross multiply
    458.83x = 688.53 × 305.11
  4. Step 4: Simplify right side
    458.83x = 210,073.95
  5. Step 5: Solve for x
    x = 210,073.95/458.83
  6. Step 6: Final answer
    x = 457.85

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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.