Home / 1,475.18-2,212.77-435.20

Finding the Fourth Proportional to 1,475.18, 2,212.77 and 435.20

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Solution

The fourth proportional to 1,475.18, 2,212.77 and 435.20 is: 652.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.18 : 2,212.77 = 435.20 : x
  2. Step 2: Convert to fraction form
    1,475.18/2,212.77 = 435.20/x
  3. Step 3: Cross multiply
    1,475.18x = 2,212.77 × 435.20
  4. Step 4: Simplify right side
    1,475.18x = 962,988.07
  5. Step 5: Solve for x
    x = 962,988.07/1,475.18
  6. Step 6: Final answer
    x = 652.79

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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.