Home / 1,475.40-2,212.64-435.15

Finding the Fourth Proportional to 1,475.40, 2,212.64 and 435.15

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Solution

The fourth proportional to 1,475.40, 2,212.64 and 435.15 is: 652.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.40 : 2,212.64 = 435.15 : x
  2. Step 2: Convert to fraction form
    1,475.40/2,212.64 = 435.15/x
  3. Step 3: Cross multiply
    1,475.40x = 2,212.64 × 435.15
  4. Step 4: Simplify right side
    1,475.40x = 962,817.06
  5. Step 5: Solve for x
    x = 962,817.06/1,475.40
  6. Step 6: Final answer
    x = 652.58

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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.