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Finding the Fourth Proportional to 1,090.48, 1,636.12 and 473.92

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Solution

The fourth proportional to 1,090.48, 1,636.12 and 473.92 is: 711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.48 : 1,636.12 = 473.92 : x
  2. Step 2: Convert to fraction form
    1,090.48/1,636.12 = 473.92/x
  3. Step 3: Cross multiply
    1,090.48x = 1,636.12 × 473.92
  4. Step 4: Simplify right side
    1,090.48x = 775,389.99
  5. Step 5: Solve for x
    x = 775,389.99/1,090.48
  6. Step 6: Final answer
    x = 711.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.