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Finding the Fourth Proportional to 1,437.21, 2,155.92 and 464.01

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Solution

The fourth proportional to 1,437.21, 2,155.92 and 464.01 is: 696.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,437.21 : 2,155.92 = 464.01 : x
  2. Step 2: Convert to fraction form
    1,437.21/2,155.92 = 464.01/x
  3. Step 3: Cross multiply
    1,437.21x = 2,155.92 × 464.01
  4. Step 4: Simplify right side
    1,437.21x = 1,000,368.44
  5. Step 5: Solve for x
    x = 1,000,368.44/1,437.21
  6. Step 6: Final answer
    x = 696.05

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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.