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Finding the Fourth Proportional to 1,354.88, 2,032.30 and 430.44

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Solution

The fourth proportional to 1,354.88, 2,032.30 and 430.44 is: 645.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.88 : 2,032.30 = 430.44 : x
  2. Step 2: Convert to fraction form
    1,354.88/2,032.30 = 430.44/x
  3. Step 3: Cross multiply
    1,354.88x = 2,032.30 × 430.44
  4. Step 4: Simplify right side
    1,354.88x = 874,783.21
  5. Step 5: Solve for x
    x = 874,783.21/1,354.88
  6. Step 6: Final answer
    x = 645.65

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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.