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Finding the Fourth Proportional to 1,464.64, 2,021.20 and 801.49

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Solution

The fourth proportional to 1,464.64, 2,021.20 and 801.49 is: 1,106.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,464.64 : 2,021.20 = 801.49 : x
  2. Step 2: Convert to fraction form
    1,464.64/2,021.20 = 801.49/x
  3. Step 3: Cross multiply
    1,464.64x = 2,021.20 × 801.49
  4. Step 4: Simplify right side
    1,464.64x = 1,619,966.93
  5. Step 5: Solve for x
    x = 1,619,966.93/1,464.64
  6. Step 6: Final answer
    x = 1,106.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.