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Finding the Fourth Proportional to 845.86, 1,167.21 and 472.79

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Solution

The fourth proportional to 845.86, 1,167.21 and 472.79 is: 652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.86 : 1,167.21 = 472.79 : x
  2. Step 2: Convert to fraction form
    845.86/1,167.21 = 472.79/x
  3. Step 3: Cross multiply
    845.86x = 1,167.21 × 472.79
  4. Step 4: Simplify right side
    845.86x = 551,837.02
  5. Step 5: Solve for x
    x = 551,837.02/845.86
  6. Step 6: Final answer
    x = 652.40

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Half scale
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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.