Home / 1,378.40-2,066.34-500.52

Finding the Fourth Proportional to 1,378.40, 2,066.34 and 500.52

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Solution

The fourth proportional to 1,378.40, 2,066.34 and 500.52 is: 750.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.40 : 2,066.34 = 500.52 : x
  2. Step 2: Convert to fraction form
    1,378.40/2,066.34 = 500.52/x
  3. Step 3: Cross multiply
    1,378.40x = 2,066.34 × 500.52
  4. Step 4: Simplify right side
    1,378.40x = 1,034,244.50
  5. Step 5: Solve for x
    x = 1,034,244.50/1,378.40
  6. Step 6: Final answer
    x = 750.33

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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.