Home / 1,314.20-1,971.54-436.76

Finding the Fourth Proportional to 1,314.20, 1,971.54 and 436.76

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Solution

The fourth proportional to 1,314.20, 1,971.54 and 436.76 is: 655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.20 : 1,971.54 = 436.76 : x
  2. Step 2: Convert to fraction form
    1,314.20/1,971.54 = 436.76/x
  3. Step 3: Cross multiply
    1,314.20x = 1,971.54 × 436.76
  4. Step 4: Simplify right side
    1,314.20x = 861,089.81
  5. Step 5: Solve for x
    x = 861,089.81/1,314.20
  6. Step 6: Final answer
    x = 655.22

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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.