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Finding the Fourth Proportional to 971.60, 1,460.10 and 852.80

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Solution

The fourth proportional to 971.60, 1,460.10 and 852.80 is: 1,281.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.60 : 1,460.10 = 852.80 : x
  2. Step 2: Convert to fraction form
    971.60/1,460.10 = 852.80/x
  3. Step 3: Cross multiply
    971.60x = 1,460.10 × 852.80
  4. Step 4: Simplify right side
    971.60x = 1,245,173.28
  5. Step 5: Solve for x
    x = 1,245,173.28/971.60
  6. Step 6: Final answer
    x = 1,281.57

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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.