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Finding the Fourth Proportional to 450.87, 675.54 and 313.47

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Solution

The fourth proportional to 450.87, 675.54 and 313.47 is: 469.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.87 : 675.54 = 313.47 : x
  2. Step 2: Convert to fraction form
    450.87/675.54 = 313.47/x
  3. Step 3: Cross multiply
    450.87x = 675.54 × 313.47
  4. Step 4: Simplify right side
    450.87x = 211,761.52
  5. Step 5: Solve for x
    x = 211,761.52/450.87
  6. Step 6: Final answer
    x = 469.68

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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.