Home / 1,445.19-2,167.56-471.15

Finding the Fourth Proportional to 1,445.19, 2,167.56 and 471.15

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Solution

The fourth proportional to 1,445.19, 2,167.56 and 471.15 is: 706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.19 : 2,167.56 = 471.15 : x
  2. Step 2: Convert to fraction form
    1,445.19/2,167.56 = 471.15/x
  3. Step 3: Cross multiply
    1,445.19x = 2,167.56 × 471.15
  4. Step 4: Simplify right side
    1,445.19x = 1,021,245.89
  5. Step 5: Solve for x
    x = 1,021,245.89/1,445.19
  6. Step 6: Final answer
    x = 706.65

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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.