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Finding the Fourth Proportional to 1,553.22, 2,330.20 and 457.54

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Solution

The fourth proportional to 1,553.22, 2,330.20 and 457.54 is: 686.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.22 : 2,330.20 = 457.54 : x
  2. Step 2: Convert to fraction form
    1,553.22/2,330.20 = 457.54/x
  3. Step 3: Cross multiply
    1,553.22x = 2,330.20 × 457.54
  4. Step 4: Simplify right side
    1,553.22x = 1,066,159.71
  5. Step 5: Solve for x
    x = 1,066,159.71/1,553.22
  6. Step 6: Final answer
    x = 686.42

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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.