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Finding the Fourth Proportional to 848.29, 1,272.48 and 300.53

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Solution

The fourth proportional to 848.29, 1,272.48 and 300.53 is: 450.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.29 : 1,272.48 = 300.53 : x
  2. Step 2: Convert to fraction form
    848.29/1,272.48 = 300.53/x
  3. Step 3: Cross multiply
    848.29x = 1,272.48 × 300.53
  4. Step 4: Simplify right side
    848.29x = 382,418.41
  5. Step 5: Solve for x
    x = 382,418.41/848.29
  6. Step 6: Final answer
    x = 450.81

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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.