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Finding the Fourth Proportional to 1,475.71, 2,213.38 and 435.83

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Solution

The fourth proportional to 1,475.71, 2,213.38 and 435.83 is: 653.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.71 : 2,213.38 = 435.83 : x
  2. Step 2: Convert to fraction form
    1,475.71/2,213.38 = 435.83/x
  3. Step 3: Cross multiply
    1,475.71x = 2,213.38 × 435.83
  4. Step 4: Simplify right side
    1,475.71x = 964,646.34
  5. Step 5: Solve for x
    x = 964,646.34/1,475.71
  6. Step 6: Final answer
    x = 653.68

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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.