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Finding the Fourth Proportional to 848.46, 1,272.60 and 436.53

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Solution

The fourth proportional to 848.46, 1,272.60 and 436.53 is: 654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.46 : 1,272.60 = 436.53 : x
  2. Step 2: Convert to fraction form
    848.46/1,272.60 = 436.53/x
  3. Step 3: Cross multiply
    848.46x = 1,272.60 × 436.53
  4. Step 4: Simplify right side
    848.46x = 555,528.08
  5. Step 5: Solve for x
    x = 555,528.08/848.46
  6. Step 6: Final answer
    x = 654.75

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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.