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Finding the Fourth Proportional to 848.38, 1,272.90 and 606.82

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Solution

The fourth proportional to 848.38, 1,272.90 and 606.82 is: 910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.38 : 1,272.90 = 606.82 : x
  2. Step 2: Convert to fraction form
    848.38/1,272.90 = 606.82/x
  3. Step 3: Cross multiply
    848.38x = 1,272.90 × 606.82
  4. Step 4: Simplify right side
    848.38x = 772,421.18
  5. Step 5: Solve for x
    x = 772,421.18/848.38
  6. Step 6: Final answer
    x = 910.47

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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.