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Finding the Fourth Proportional to 845.32, 1,166.47 and 472.27

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Solution

The fourth proportional to 845.32, 1,166.47 and 472.27 is: 651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.32 : 1,166.47 = 472.27 : x
  2. Step 2: Convert to fraction form
    845.32/1,166.47 = 472.27/x
  3. Step 3: Cross multiply
    845.32x = 1,166.47 × 472.27
  4. Step 4: Simplify right side
    845.32x = 550,888.79
  5. Step 5: Solve for x
    x = 550,888.79/845.32
  6. Step 6: Final answer
    x = 651.69

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Double scale
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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.