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Finding the Fourth Proportional to 1,920.04, 2,880.11 and 533.38

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Solution

The fourth proportional to 1,920.04, 2,880.11 and 533.38 is: 800.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.04 : 2,880.11 = 533.38 : x
  2. Step 2: Convert to fraction form
    1,920.04/2,880.11 = 533.38/x
  3. Step 3: Cross multiply
    1,920.04x = 2,880.11 × 533.38
  4. Step 4: Simplify right side
    1,920.04x = 1,536,176.00
  5. Step 5: Solve for x
    x = 1,536,176.00/1,920.04
  6. Step 6: Final answer
    x = 800.08

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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.