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Finding the Fourth Proportional to 1,442.79, 2,164.15 and 468.90

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Solution

The fourth proportional to 1,442.79, 2,164.15 and 468.90 is: 703.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.79 : 2,164.15 = 468.90 : x
  2. Step 2: Convert to fraction form
    1,442.79/2,164.15 = 468.90/x
  3. Step 3: Cross multiply
    1,442.79x = 2,164.15 × 468.90
  4. Step 4: Simplify right side
    1,442.79x = 1,014,769.94
  5. Step 5: Solve for x
    x = 1,014,769.94/1,442.79
  6. Step 6: Final answer
    x = 703.34

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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.