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Finding the Fourth Proportional to 1,333.55, 2,001.78 and 554.10

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Solution

The fourth proportional to 1,333.55, 2,001.78 and 554.10 is: 831.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.55 : 2,001.78 = 554.10 : x
  2. Step 2: Convert to fraction form
    1,333.55/2,001.78 = 554.10/x
  3. Step 3: Cross multiply
    1,333.55x = 2,001.78 × 554.10
  4. Step 4: Simplify right side
    1,333.55x = 1,109,186.30
  5. Step 5: Solve for x
    x = 1,109,186.30/1,333.55
  6. Step 6: Final answer
    x = 831.75

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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.