Home / 1,378.18-2,066.34-500.25

Finding the Fourth Proportional to 1,378.18, 2,066.34 and 500.25

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Solution

The fourth proportional to 1,378.18, 2,066.34 and 500.25 is: 750.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.18 : 2,066.34 = 500.25 : x
  2. Step 2: Convert to fraction form
    1,378.18/2,066.34 = 500.25/x
  3. Step 3: Cross multiply
    1,378.18x = 2,066.34 × 500.25
  4. Step 4: Simplify right side
    1,378.18x = 1,033,686.59
  5. Step 5: Solve for x
    x = 1,033,686.59/1,378.18
  6. Step 6: Final answer
    x = 750.04

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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.