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Finding the Fourth Proportional to 803.93, 1,109.61 and 472.46

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Solution

The fourth proportional to 803.93, 1,109.61 and 472.46 is: 652.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.93 : 1,109.61 = 472.46 : x
  2. Step 2: Convert to fraction form
    803.93/1,109.61 = 472.46/x
  3. Step 3: Cross multiply
    803.93x = 1,109.61 × 472.46
  4. Step 4: Simplify right side
    803.93x = 524,247.93
  5. Step 5: Solve for x
    x = 524,247.93/803.93
  6. Step 6: Final answer
    x = 652.11

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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.