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Finding the Fourth Proportional to 941.58, 1,295.52 and 816.84

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Solution

The fourth proportional to 941.58, 1,295.52 and 816.84 is: 1,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.58 : 1,295.52 = 816.84 : x
  2. Step 2: Convert to fraction form
    941.58/1,295.52 = 816.84/x
  3. Step 3: Cross multiply
    941.58x = 1,295.52 × 816.84
  4. Step 4: Simplify right side
    941.58x = 1,058,232.56
  5. Step 5: Solve for x
    x = 1,058,232.56/941.58
  6. Step 6: Final answer
    x = 1,123.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.