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Finding the Fourth Proportional to 845.15, 1,166.27 and 472.11

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Solution

The fourth proportional to 845.15, 1,166.27 and 472.11 is: 651.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.15 : 1,166.27 = 472.11 : x
  2. Step 2: Convert to fraction form
    845.15/1,166.27 = 472.11/x
  3. Step 3: Cross multiply
    845.15x = 1,166.27 × 472.11
  4. Step 4: Simplify right side
    845.15x = 550,601.00
  5. Step 5: Solve for x
    x = 550,601.00/845.15
  6. Step 6: Final answer
    x = 651.49

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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.