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Finding the Fourth Proportional to 848.89, 1,273.58 and 438.32

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Solution

The fourth proportional to 848.89, 1,273.58 and 438.32 is: 657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.89 : 1,273.58 = 438.32 : x
  2. Step 2: Convert to fraction form
    848.89/1,273.58 = 438.32/x
  3. Step 3: Cross multiply
    848.89x = 1,273.58 × 438.32
  4. Step 4: Simplify right side
    848.89x = 558,227.03
  5. Step 5: Solve for x
    x = 558,227.03/848.89
  6. Step 6: Final answer
    x = 657.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.