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Finding the Fourth Proportional to 804.39, 1,110.42 and 472.84

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Solution

The fourth proportional to 804.39, 1,110.42 and 472.84 is: 652.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    804.39 : 1,110.42 = 472.84 : x
  2. Step 2: Convert to fraction form
    804.39/1,110.42 = 472.84/x
  3. Step 3: Cross multiply
    804.39x = 1,110.42 × 472.84
  4. Step 4: Simplify right side
    804.39x = 525,045.44
  5. Step 5: Solve for x
    x = 525,045.44/804.39
  6. Step 6: Final answer
    x = 652.72

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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.